Every modern car is equipped with an electronic control unit. This device makes life much easier for the vehicle owner. If there are malfunctions in the operation of vehicle components, the ECU instantly issues an error alert. Similar information appears on the screen of the car's multimedia system. The most common malfunctions in a Chevrolet Cruze car are errors with codes 84 and 89. Let’s try to understand why such violations occur and what they indicate in more detail.
how to deal with 84 and 89 errors
Every modern car is equipped with an electronic control unit. This device makes life much easier for the vehicle owner. If there are malfunctions in the operation of vehicle components, the ECU instantly issues an error alert. Similar information appears on the screen of the car's multimedia system. The most common malfunctions in a Chevrolet Cruze car are errors with codes 84 and 89. Let’s try to understand why such violations occur and what they indicate in more detail.
The screen shows error code 89: what should I do?
Owners of this car model have to deal with error 89 quite often. Fortunately, such an error on the Chevrolet Cruze is not considered a harbinger of a serious problem and only indicates that it is time to contact a specialized center and carry out scheduled maintenance.
This information is displayed on the ECU only based on the speedometer readings. In this case, the driver is recommended to adhere to the following action plan:
- Refer to the company regulations and find out the required technical work for the corresponding mileage of the car;
- Decide on the necessary materials and purchase them at the nearest store;
- Carry out the recommended work at the current mileage.
The owner can perform the last point at his own discretion or with the help of qualified specialists at a service station. Note that it is rare, but it still happens that error 89 appears due to a malfunction of the speedometer itself.
Watch the video about replacing the thermostat when error 89 appears on the display.
What does error code 84 mean?
The second, no less popular problem for the Chevrolet Cruze is the appearance of error 84. In comparison with the previous error, this problem is not so pronounced and does not provide a complete message to the driver about the malfunction. The only thing that can be said for sure is that in order to preserve the engine components of the ECU, the power of the power unit was reduced. If this violation is not corrected in time, the car will begin to accelerate more slowly. At the same time, fuel consumption will increase significantly. The following factors can trigger the appearance of error 84:
- Throttle valve malfunction;
- Lack of coolant;
- Problems with the ECU itself;
- Malfunction of the accelerator pedal.
In the first case, the electronic throttle valve may be either clogged or faulty due to contact wear. If clogged, you can fix the problem yourself by simply removing excess debris from the valve. When erasing contacts, it is necessary to press the contact to the track, however, such a measure will have a temporary effect. To completely eliminate the problem, you will need to replace the throttle. Indications of low coolant level are usually displayed on the display due to overheating of the pipes. This problem is not serious and requires the driver to simply add coolant to the reservoir. With the ECU itself, disturbances appear due to oxidized contacts. To resume its operation, it is necessary to clean contacts 42 to 46 (oxides form on them in most cases).
Published: October 09, 2017
Code 84
This error is a little more complicated. It indicates a problem with the engine and its transition to emergency mode. Essentially, it means that the motor is running only to get to the service on its own. It is not recommended to drive for a long time with error code 84 illuminated. This can lead to serious damage. There may be several reasons for this code:
- Lack of coolant. The problem is related to the pipes passing through the throttle. When they overheat, an error may appear. After adding liquid, this code may disappear. This is perhaps the simplest fault;
- Check the condition of the throttle valve. When using bad fuel, various blockages can occur. However, it may not close completely. In this case, the control unit sees changes in the angle. As a result, it shows this error. If contamination is detected, be sure to clean the throttle;
- Another problem also arises from the throttle valve. It's electronic on the Cruze, and that's where problems arise. Under the side cover there are 4 contacts and 4 tracks. The center contact often wears out. In this case, it turns out that the contact does not reach the track. This is treated with tweezers. With its help, the contact is pressed to the track. True, the effect of such repairs does not last long. Soon you will still have to change the throttle. To do this you need to buy it assembled. Parts for it are not sold separately;
- The gas pedal can also cause this error. On the Chevrolet Cruze, the accelerator also has a block similar to that installed on the throttle valve. The reasons for their failure are the same;
- Electronic control unit. Oxidation of the contacts on it often occurs. You should pay attention to contacts 42 to 46. After inspecting them, clean those contacts that are covered with green oxides.
Car diagnostics
Chevrolet Cruze Chevy Logbook Cabin filter AMD
With the release of each new version of a Chevrolet car, be it Aveo, Niva, Lacetti, Cruze or Blazer, it becomes increasingly difficult to decipher the codes, as their number is steadily growing. In order to decipher a combination of numbers unknown to you, you need Carry out vehicle diagnostics: there is no way to do without this.
Chevrolet Cruze car interior
The easiest way to diagnose is to check the messages on the dashboard. In Chevrolet cars, not combinations of numbers, but messages may appear on the dashboard. The owner may not know the translation of the phrases that pop up before his eyes, but these messages are important. Therefore, we invite you to familiarize yourself with their designation. Such messages are typical for the Cruze, Lacetti and Blazer models.
| Message | Designation |
| Change Engine Oil Soon | The engine fluid needs to be replaced soon. |
| Low Engine Oil Level | The engine fluid level is low. It is necessary to check the oil level in the engine and top up if necessary. |
| Oil Pressure Low - Stop Engine | Engine fluid pressure is low. You need to turn off the car. |
| Program Cluster | The instrument panel needs to be reprogrammed. As a rule, such a message pops up after replacing elements on the “tidy”. |
| Service Vehicle Soon | The message warns the motorist that a service is approaching. Usually it pops up when problems are detected in the motor control unit. |
| Vehicle Overspeed | Vehicle speed limit exceeded. |
To learn more about the errors present in the system of your car, you can use a special scanner. This device is a compact computer with software installed in it, designed to check a car on your own.
Diagnostics of a Chevrolet car using a special scanner
There are two types of scanners:
- Universal device. Such gadgets are used at most service stations. Such computers cannot be called full-fledged technical equipment for diagnostics, since they cannot always decipher all the errors present in the car.
- Dealer device. You will not find such a scanner on the open market: it can only be purchased from a dealer. However, these devices can flash the car’s on-board computer, program chip keys and detect breaks in electrical wiring. If you have such a scanner, then you can easily decipher errors in the BC (on-board computer) of your car.
Chevrolet Cruze Serious › Logbook › I ask for advice on Code 89
Fault codes (and their solutions) on the on-board computer! Here are the fault codes and their possible solutions on the on-board computer screen!
PS all links are for the CD with software for Cruise
-Code - Explanation - Link
1 Oil change indicator • ECM for LXV or 2H0
• ECM for LLW
• ECM for LXT
2 The radio key fob is not detected, press the clutch to restart. Description and operation of the charging system
3 Low coolant level. Cooling system Description and principle of operation
4 The air conditioner is turned off. Description and operating principle of an automatic heating, ventilation and air conditioning system
Description and operating principle of a manually controlled heating, ventilation and air conditioning system
5 The steering column is locked. Description and principle of operation of the steering wheel and steering column
7 Turn the steering wheel and turn the ignition off and on again. Description and principle of operation of the steering wheel and steering column
8 Turn the ignition off and on again. Please check again. Description and principle of operation of the steering wheel and steering column
9 Turn the steering wheel and turn on the engine again. Description and principle of operation of the steering wheel and steering column
10 Overheating of the brake system. Description and operating principle of the brake warning system
11 Brake pads are worn. Description and operating principle of the brake warning system
15 Additional brake light malfunction. Outdoor lighting systems Description and principle of operation
16 Perform brake light service. Outdoor lighting systems Description and principle of operation
17 Malfunction of the headlight range control. Contact the service station. Outdoor lighting systems Description and principle of operation
18 Faulty low beam of the left headlight. Outdoor lighting systems Description and principle of operation
19 Rear fog lamp malfunction. Outdoor lighting systems Description and principle of operation
20 Faulty low beam of the right headlight. Outdoor lighting systems Description and principle of operation
21 Malfunction of the left front side light. Outdoor lighting systems Description and principle of operation
22 Malfunction of the right front side light. Outdoor lighting systems Description and principle of operation
23 Malfunction of the reversing light. Outdoor lighting systems Description and principle of operation
24 Malfunction of the license plate light. Outdoor lighting systems Description and principle of operation
25 Malfunction of the left front turn signal. Outdoor lighting systems Description and principle of operation
26 Malfunction of the left rear turn signal. Outdoor lighting systems Description and principle of operation
27 Malfunction of the right front turn signal. Outdoor lighting systems Description and principle of operation
28 Malfunction of the right rear turn signal. Outdoor lighting systems Description and principle of operation
29 Check the trailer brake light. Outdoor lighting systems Description and principle of operation
30 Check the trailer's reversing light. Outdoor lighting systems Description and principle of operation
31 Check the trailer's left turn signal. Outdoor lighting systems Description and principle of operation
32 Check the trailer's right turn signal. Outdoor lighting systems Description and principle of operation
33 Check the trailer's rear fog light. Outdoor lighting systems Description and principle of operation
34 Check the trailer tail light. Outdoor lighting systems Description and principle of operation
35 Replace the battery in the radio key fob. Description and operation of the keyless entry system
48 Clean the side blind spot viewing system lens. Description and principle of operation of the object detection system
50 Reset the hood: see owner's manual. Immobilizer Description and principle of operation
54 Water in fuel. Contact a service station. • Description of the fuel system for LXV or 2H0
• Description of the fuel system for LLW
• Description of the fuel system for LXT
55 Perform maintenance on the diesel particulate filter. Exhaust Particulate Filter System Description
59 Open and then close the driver's door window. Electric windows Description and principle of operation
60 Open and then close the front passenger door window. Electric windows Description and principle of operation
61 Open and then close the left rear passenger door window. Electric windows Description and principle of operation
62 Open and then close the right rear passenger door window. Electric windows Description and principle of operation
65 A break-in attempt was made. Anti-theft system (CTD) Description and operating principle
66 Perform anti-theft alarm maintenance. Anti-theft system (CTD) Description and operating principle
67 Perform maintenance on the steering column lock. Description and operating principle of the power steering system
68 Perform power steering maintenance. Description and operating principle of the power steering system
70 Perform maintenance on the ride height control system. Outdoor lighting systems Description and principle of operation
Fuel system
Chevrolet Cruze egemo Logbook Changing the automatic transmission oil
There are several weak points in the fuel system that can make the power plant unable to start. The reasons for their failure are most often associated with the use of low-grade fuel. Typical fuel system problems are shown in the table below.
| Cause of malfunction | Manifestation |
| Refueling with low-grade fuel | Almost immediately after visiting the gas station |
| Fuel injectors | Starting becomes more difficult each time depending on the degree of clogging of the sprayer. |
| Gasoline pump | Failure to start the engine is usually preceded by a situation where the car stalls while driving. |
| Fuel filter | Clogging can occur either gradually or suddenly after refueling with low-grade fuel. |
Removed fuel filter
To eliminate a malfunction in the fuel system, it is recommended to first check the condition of the fuel injectors. If diagnostics show a violation of the spray pattern, then ultrasonic cleaning is recommended.
It is also necessary to check the condition of the fuel pump and fuel filter. The Chevrolet Cruze does not have a special access hatch under the rear seats, so the gas tank will need to be removed. During this event, you can assess the condition of its internal walls and visually check the quality of the filled fuel.
CLUB CHEVROLET LACETTI/CRUZE
Malfunction of the clutch limit switch The Chevrolet Cruze is equipped with an electronic clutch. That is, there is no mechanical connection, in the form of a cable, between the pedal and the clutch.
Another feature of this brand of car is that it will not start without the clutch pedal being depressed; there is a corresponding lock. Sometimes this situation happens. You squeeze the clutch and start turning the engine with the starter, but the Chevrolet Cruze does not start the first time. Let's consider these questions using the Chevrolet Cruze model as an example. If the Chevrolet Cruze does not start, but the starter turns, the cause may be a malfunction of the fuel system. This problem can also be caused by a clogged fuel filter or throttle valve, problems with the ignition system, low battery charge, or problems with wiring or fuses.
-30C Chevrolet Cruze will not start.
Checking the fuel system and filter First of all, upon hearing that the Chevrolet Cruze starter is turning, but the engine does not start, the condition of the fuel system is checked. If this is the reason, when the ignition is turned on, there is no sound from the fuel pump motor. In this case, the fuse could have burned out, or the fuel pump itself has failed and needs to be replaced.
Poor quality fuel and the presence of impurities in it lead to contamination of the fuel filter. If the engine does not start when the starter is running, the system may not be receiving fuel and is not passing through a clogged filter.
Ignition diagnostics Such a breakdown on a Chevrolet Cruze could also be caused by a problem in the ignition system. You need to start checking with the high-voltage coil and the ignition distributor. The engine will not start even with the spark plugs flooded, so you need to unscrew the spark plugs to check for a spark. On injection models, if there is no spark, the ignition module must be replaced.
CRUZ WILL NOT START
Don't forget about the distributor. It is not difficult to check this element: If the systems are checked, and the Chevrolet Cruze does not start with the starter running, we proceed to checking the throttle valve. A dirty damper, like a clogged filter, causes the engine to not start.
Errors code 84 and 89
Chevrolet Cruze Logbook Leaking from under the valve cover - treatment
ON Chevrolet AVEO and CRUZ, it appears precisely - code 84 and 89 + ABS is on.
But on the Opel Astra J code 84 appears + it says that the engine power is reduced + ESP is on.
Now a little decoding
84 – Engine power reduced.
89 – Required to undergo regular maintenance (vehicle maintenance)
The Astra may be slightly different, but the essence is the same; why the ABS and ESP sensors also light up is not very clear. Apparently the car shows with all its appearance that it is time for it to go to the service station. Reduced power means that the “emergency mode” is turned on, supposedly just to get to the service station and get repaired, so you shouldn’t expect the car to be “quick.”
The car can either stall or start every once in a while, the speed fluctuates, or it won’t work for me.
What is the reason for the errors?
There are a lot of reasons, but it’s worth noting that they are not always critical, so you shouldn’t buy spare parts right away!
Guys, I want to warn you - before sounding the alarm, you must first look for an intelligent diagnostician and only then draw conclusions! After all, my problem was not at all with the throttle. But this became clear later.
Precisely a smart one with a good scanner, who understands your Chevrolet or Opel, because if you connect a cheap scanner like ELM 327, then it simply may not detect the error!
SO, what problems there may be, I’ll start with, perhaps, the most harmless one:
Probably intrigued. To be honest, the diagnostician struggled with the car for almost a day. But I found a problem.
Other faults
Error code 89 Frequently encountered problems that prevent the engine from starting and methods for troubleshooting Chevrolet Cruze with 1.6 and 1.8 engines are summarized in the table below.
| Malfunction | Description |
| The gear selector is incorrectly installed | The ECU of cars with an automatic transmission controls the position of the gear selector lever. Starting is not possible if one of the movement options is selected. Moving the gearbox to the “P” position will eliminate the impossibility of starting. Cars with manual transmissions do not have this problem. |
| Code 89 | In most cases, it reports a thermostat malfunction. Code 89 rarely becomes the reason for the inability to start the engine, but with a combination of other faults, it can prevent the car from starting. To fix the problem, you need to replace the thermostat. |
| After washing the car stalled and would not start. Sometimes the engine seizes. | Dry the engine compartment. If necessary, replace the air filter. |
Hello! I have a 2013 Chevrolet Cruze. It gives an error: code 89. Help me figure out what this means! (Michael).
Mikhail, hello, we have analyzed your question and are ready to answer it.
Car alarm and inability to start the engine
The purpose of the alarm is to prevent unauthorized start of the power plant. For this purpose, protection is implemented both at the software level and at the physical level. As a result, the failure of any component of the security system makes it impossible to start the engine. There are also problems with the ignition switch.
The simplest way to diagnose a security system is to test run the power plant with the car alarm turned off.
Chevrolet Cruze 1.8 MT LS Logbook Getting rid of error 89 CODE 89
The most common error is Code 89. Many people don’t know what it is and how to deal with it. To be honest, I didn’t know it myself, and I encountered this problem after installing the LTZ tidy. When starting the car, when checking the instrument panel, the following message was displayed on the wide screen:
The old device didn’t even have this: After surfing the Internet a lot and reading a lot of reviews, everything came up with one thing. It's a thermostat! But why a thermostat? Everything works as normal, both the fan and the engine cooling. I took a chance on a replacement. I chose a Luzar thermostat (Russian-made), which was prompted by one thing: the time to receive the spare part was 1 day after ordering (you need to travel long distances). The thermostat is completely similar. factory and comes with a sealing ring Luzar LT 0550 Next, we drain the antifreeze in any convenient way and dismantle the thermostat itself. In my case, the whole picture with error 89 immediately became clear, the sensor simply rotted.
Full sizeBefore removing the sensor connector
Full size Sensor and connector remain together
Full size Remains in thermostat
Full size Only the sensor failed, everything else is fine
Full sizeView of the sensor from the connector side
Full size The connector itself Before all work performed, it is necessary that the engine cools down. Otherwise, you can get burned by hot antifreeze. Install the Luzar thermostat and everything else. New antifreeze was added.
Now, when starting the engine and checking the tidy, no “Maintenance” is required. Code 89 is defeated. Let's see how long import substitution goes
Good luck to everyone on the roads!
Cheap solution, my problem
I didn’t specifically combine them with the first four; I want to dwell on my problem in more detail. One more warning - before you get into your brains and electronics, let’s remove the battery terminals!
In general, my diagnostician was “from God,” as they say in Chevrolet and Opel, “he ate the dog,” he even worked for the officials for a year, but then he was laid off (GM left Russia). He has a professional scanner, costing 160,000 “our wooden ones”, and he updates the firmware on it every year (about another $300 - $400) - the balalaika is not cheap. Here is a photo.
But as he says, all the latest changes and information on new car models appear immediately (not only GM, all cars from our TAZOVs to Infinity). Not one ELM 327 (from China) has such information, and certainly not! Who will “cover” the annual firmware? That's why many Chinese scanners have errors - CAN'T READ!
Diagnostics - he connected his “miracle device” and it showed that it was not a choke! Wow, a stone just fell from my soul, it revealed that it was a pedal! To hell with it, I’ll buy a new one for only 3,000 rubles, and replace it myself in a couple of minutes, unscrew one bolt, remove it and connect the cable.
However, the diagnostician told me - let's try to restore this one, if the error goes away then the pedal will be 100%, and then you will decide whether to buy a new one or drive on this one for a while. Okay, I agreed. But first he says - I’ll measure all the circuits - with a multimeter, I didn’t delve further, but it turned out that the pedal does not give any breaks! Unclear! It turns out she's whole?!
He tells me this - he recently came to see me in an Astra, code 84 + ESP was also on, in the end the contact on the ECU oxidized, they cleaned it, and everything worked like clockwork. Let's take a look at you. The 6 Volt load comes from there.
As a result, they oxidized to “green oxide”, in my opinion, from 42 to 46 contacts. When they took it all apart, it was a pity that there were no photos left. They cleaned it, put it back in place, and lo and behold, code 84 - 89 disappeared, the ABS went out, the car began to breathe deeply! Damn, there’s cold and heat and condensation under the hood in the fall. Looks like they got eaten up.
In the end, I didn't have to buy anything! The cost of repairs + diagnostics is 1500 rubles - SATISFIED AS AN ELEPHANT! The master noticed that the voltage at the ECU contacts is only about 3 - 5 Volts (there are a lot of them), therefore - DO NOT APPLY ANY LIQUIDS TO IMPROVE CONTACTS, such as terminal protection, etc. This way you can sag the voltage and simply burn the ECU! You just need cleaning, it is advisable not to damage the protective coating of the contact (wipe with alcohol - carefully), then blow everything off with compressed air.
The moral of this story is that, after reading on the forum, I almost removed the throttle and disassembled it! Although it wasn’t worth doing this (specifically on my AVEO)!
GUYS FIRST, LET'S GO TO A DIAGNOSIS - A INTELLIGENT DIAGNOSIS ! And then we’ll self-medicate (otherwise you might end up doing a lot of things). And yes, again, from the first steps, after adding antifreeze (if the level is gone), look at the contacts on the ECU, clean them - perhaps the problem will be solved. We rode with the master for about 5 - 10 kilometers, no mistakes!
This is the story, I hope it helped! I tried to put it on the shelves as much as possible, there is information on the Internet on forums, but it varies everywhere, there is no common denominator - maybe this, or maybe that! Check all the devices that I described to you - the error will go away in 95% of cases.
PS People for those who are looking for a diagnostician in Ulyanovsk - I’m writing my own, his name is Alexey, mobile - 8 (909) 3602112. Really, smart guy!
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Chevrolet Cruze error code 89
All owners of a Chevrolet Cruze have to deal with error code 89. This error does not indicate a failure in the system, but warns the driver that it is time to undergo scheduled maintenance. The electronic control unit informs the driver about error 89, based on the speedometer readings. The following course of action is suggested when error 89 lights up on the display:
- The driver must check the official Chevrolet regulations, from which it will become clear what specific work needs to be done for the achieved mileage;
- Next, you need to go purchase consumables: oil, filters, and so on;
- The final step is to perform all Chevrolet recommended work on the Cruze at your current mileage. Depending on the complexity of the scheduled maintenance, the driver can perform it independently or at a service center.
It is worth noting that in rare cases, the cause of the Chevrolet Cruze error is the incorrect operation of the speedometer, which transmits incorrect information about the mileage to the electronic control unit.
Battery fault
If starting the Chevrolet Cruze power plant has become impossible, first of all you need to pay attention to the voltage of the on-board network. You need to measure it on the battery. For these purposes, it is recommended to use a load fork.
The voltage drop is most pronounced in cold weather. The battery does not provide sufficient starting current, the starter does not turn, and the relay clicks. The electronic control unit monitors the voltage of the on-board network. As soon as its value falls below the threshold, the startup attempt is disabled. What complicates the situation is that in cold weather the engine oil becomes thicker and it is more difficult to turn the crankshaft. The combination of these factors leads to the fact that starting the engine becomes impossible.
To troubleshoot the problem, it is recommended to take the following actions:
Starting from another vehicle is not recommended, as there is a high risk of damage to the electronics.
What does code 89 mean?
This error code can be called a disease for Chevrolet Cruze cars. Over the past few years, hundreds of motorists have encountered this problem. We have turned to an official source for help with your question. Here's what we learned: combination 89 means the need for vehicle maintenance. Regardless of the mileage on your car, unfavorable conditions for operating a Chevrolet Cruze may periodically arise. It is these conditions that cause the need for maintenance.
Red Chevrolet Cruze
Unfortunately, the manufacturer does not provide more specific information to solve this problem, and it is clear why. Who wants to lose extra money? Diagnostics from an official dealer costs about 600-800 rubles, and this is only the test itself, without solving the problem. Plus, you must come to the “official” with a burning “check” of the error. But in practice, code 89 tends to appear and disappear on the screen. Therefore, if you decide to be serviced by a dealer, then you need to go to him when the code is always on, without disappearing. Of course, this option is not the most acceptable, but, unfortunately, the Chevrolet concern has determined such a car diagnostic policy.
Everyone knows that service at the dealer in most cases costs a pretty penny. We can recommend another option: diagnose your vehicle yourself. To do this, you will need a laptop with the necessary software for this and a special adapter for testing. The laptop is connected via an adapter to the diagnostic connector (its location is indicated in the service manual), and the diagnostic procedure is launched on the computer. The program reads all fault codes and displays them on the screen. In this case, the codes will not be two-digit and can be deciphered using technical documentation. And based on the information received, it will be possible to draw some conclusions.
But keep in mind that in this case you can save money only if you do the diagnostics yourself. If you contact specialists at any service station, the cost of the inspection will cost approximately the same amount that you will need to pay to the dealer. Therefore, how to act in such a situation is up to you to decide.
>Video “Chevrolet Cruze check at home”
You can find out more about the verification here.
Cheap solution, my problem
I didn’t specifically combine them with the first four; I want to dwell on my problem in more detail. One more warning - before you get into your brains and electronics, let’s remove the battery terminals!
In general, my diagnostician was “from God,” as they say in Chevrolet and Opel, “he ate the dog,” he even worked for the officials for a year, but then he was laid off (GM left Russia). He has a professional scanner, costing 160,000 “our wooden ones”, and he updates the firmware on it every year (about another $300 - $400) - the balalaika is not cheap. Here is a photo.
But as he says, all the latest changes and information on new car models appear immediately (not only GM, all cars from our TAZOVs to Infinity). Not one ELM 327 (from China) has such information, and certainly not! Who will “cover” the annual firmware? That's why many Chinese scanners have errors - CAN'T READ!
Diagnostics - he connected his “miracle device” and it showed that it was not a choke! Wow, a stone just fell from my soul, it revealed that it was a pedal! To hell with it, I’ll buy a new one for only 3,000 rubles, and replace it myself in a couple of minutes, unscrew one bolt, remove it and connect the cable.
However, the diagnostician told me - let's try to restore this one, if the error goes away then the pedal will be 100%, and then you will decide whether to buy a new one or drive on this one for a while. Okay, I agreed. But first he says - I’ll measure all the circuits - with a multimeter, I didn’t delve further, but it turned out that the pedal does not give any breaks! Unclear! It turns out she's whole?!
He tells me this - he recently came to see me in an Astra, code 84 + ESP was also on, in the end the contact on the ECU oxidized, they cleaned it, and everything worked like clockwork. Let's take a look at you. The 6 Volt load comes from there.
As a result, they oxidized to “green oxide”, in my opinion, from 42 to 46 contacts. When they took it all apart, it was a pity that there were no photos left. They cleaned it, put it back in place, and lo and behold, code 84 - 89 disappeared, the ABS went out, the car began to breathe deeply! Damn, there’s cold and heat and condensation under the hood in the fall. Looks like they got eaten up.
In the end, I didn't have to buy anything! The cost of repairs + diagnostics is 1500 rubles - SATISFIED AS AN ELEPHANT! The master noticed that the voltage at the ECU contacts is only about 3 - 5 Volts (there are a lot of them), therefore - DO NOT APPLY ANY LIQUIDS TO IMPROVE CONTACTS, such as terminal protection, etc. This way you can sag the voltage and simply burn the ECU! You just need cleaning, it is advisable not to damage the protective coating of the contact (wipe with alcohol - carefully), then blow everything off with compressed air.
The moral of this story is that, after reading on the forum, I almost removed the throttle and disassembled it! Although it wasn’t worth doing this (specifically on my AVEO)!
GUYS FIRST, LET'S GO TO A DIAGNOSIS - A INTELLIGENT DIAGNOSIS ! And then we’ll self-medicate (otherwise you might end up doing a lot of things). And yes, again, from the first steps, after adding antifreeze (if the level is gone), look at the contacts on the ECU, clean them - perhaps the problem will be solved. We rode with the master for about 5 - 10 kilometers, no mistakes!
This is the story, I hope it helped! I tried to put it on the shelves as much as possible, there is information on the Internet on forums, but it varies everywhere, there is no common denominator - maybe this, or maybe that! Check all the devices that I described to you - the error will go away in 95% of cases.
P0621 error Chevrolet Cruze avtodiagnostika.bitballoon.com
Electronic control units of modern cars have diagnostic functions, which greatly simplifies life for drivers. If the ECU sees an error in the operation of the engine and other units, the driver is notified about this by the corresponding information on the multimedia system display. The Chevrolet Cruze also performs automatic diagnostics, capable of notifying the driver of various problems. Most often, owners of this car model have to deal with errors 84 and 89. They signal corresponding problems that need to be eliminated in order for the engine to operate in standard mode again.
Chevrolet Cruze: error code 89
All owners of a Chevrolet Cruze have to deal with error code 89. This error does not indicate a failure in the system, but warns the driver that it is time to undergo scheduled maintenance. The electronic control unit informs the driver about error 89, based on the speedometer readings. The following course of action is suggested when error 89 lights up on the display:
- The driver must check the official Chevrolet regulations, from which it will become clear what specific work needs to be done for the achieved mileage;
- Next, you need to go purchase consumables: oil, filters, and so on;
- The final step is to perform all Chevrolet recommended work on the Cruze at your current mileage. Depending on the complexity of the scheduled maintenance, the driver can perform it independently or at a service center.
It is worth noting that in rare cases, the cause of the Chevrolet Cruze error is the incorrect operation of the speedometer, which transmits incorrect information about the mileage to the electronic control unit.
Causes
What do error codes 84 and 89 mean on a Chevrolet Cruze? The answer to this question is simple. These numbers mean the following:
- Code 84 – engine power reduced;
- Code 89 – scheduled maintenance has reached its due date.
Often, simultaneously with error 84, visible problems with the motor begin; there may be several reasons for this code. Below we'll take a closer look at why they appear. Be sure to conduct a detailed diagnosis. It often reveals additional errors that can be used to determine the malfunction more accurately. Code 89. This is perhaps one of the most harmless codes. This error occurs when it is necessary to undergo scheduled maintenance. This happens when a certain mileage is reached. Often this error can occur when the speedometer sensor malfunctions. In this case, be sure to check its condition. If everything is fine with it, visit the service. You can also replace parts that are time to replace yourself. A more detailed list of required work can be found in the official regulations published class=”aligncenter” width=”570″ height=”320″[/img]
Basic malfunctions related to the ignition key and immobilizer
The most common problems associated with the ignition key:
Diagnostic instructions and procedures
If a malfunction is detected in the engine, the ECU sends a signal to the car’s dashboard, where the “check engine” indicator lights up. System errors are recorded in the memory log in the form of codes.
If the error is not critical, then to correct it it is enough to reboot the controller unit or reset the ECU settings.
If a sensor, component or unit breaks down, the indicator will remain on until the problem is resolved.
In pre-restyling versions of the 2011 Chevrolet Cruze, to reset ECU errors, you must perform several step-by-step actions:
The indicator light should stop lighting - the ECU errors have been reset.
For computer diagnostics, error codes are read through the ODB 2 connector and the cause of the failure is determined. If the car does not start and the error code is P0016, then its interpretation means the crankshaft and camshaft are incorrectly positioned relative to each other.
The sensors determine which cylinder is misfiring, the ECM sends a signal to stop the fuel supply, and the engine does not start. Diagnostic information is analyzed, and troubleshooting actions begin with testing the electrical circuit. Possible minor irregularities may be the source of the problem: faulty or removed contact terminals, loose connections, worn wiring or damaged insulation.
If no damage is found in the electrical circuit, then check according to the diagnostic table. For example: when the camshaft position sensor is disconnected, the scanner should count error P0340, and when the power is turned off (removing the terminal from the battery), the scanner counter stops.
This operation allows you to determine the reason for the engine failure to start: the error values are increasing - there are serious problems with the motor or the ECM is not working correctly. A complete list of ECU error codes can be found in the Chevrolet Cruze data sheet.
During complex diagnostics, all vehicle systems are scanned - the information obtained allows you to determine the general condition of all components and assemblies, the sensors themselves and the controller units.
Any technical malfunction is recorded as an error code, remaining in the memory log. Thus, you can estimate the cost of the machine by tracking all the malfunctions and failures over the past period of operation, as well as identify possible future problems.
Chip tuning and firmware for Chevrolet Cruze:
So, an icon with or without an inscription appeared on the instrument panel. What to do - go to a car service? No, you can just look in the service book, where the symbols are written. Here's a breakdown of the icons:
The time to change the engine oil is approaching (less than 5% service life)
Fill the oil and reset the readings of this resource
If the message does not disappear after filling the oil, then let the power unit operate in the thermodynamic cycle, since the instrument cluster is normal
Low engine oil pressure - stop the engine
Performed after replacing devices or when information appears on the display. the center of such a message. We recommend carrying it out using the SPS system
The error is displayed when a problem is detected by the ECM engine control unit
Scanners are used to carry out diagnostics. There are laptops and computers. So, the latter includes a laptop or tablet, from which all operations can be carried out if you have the appropriate software.
Portable or display ones are very expensive, but their operating principle is the same - to identify errors and malfunctions in the electronic engine control unit.
Diagnosis of car faults using a scanner.
After connecting through a special connector, a test scan is carried out, which shows the presence of errors. Based on the errors, you can determine in which node the fault is hidden.
Decoding error code 89 in a Chevrolet Cruze
Let's look at the most common questions that owners have when diagnosing a Chevrolet.
Diagnostics of Chevrolet Cruze sensors via OBDII
| Meaning | Translation | What to do |
| Change Engine Oil Soon | The time to change the engine oil is approaching (less than 5% service life) | Fill the oil and reset the readings of this resource |
| Low Engine Oil Level | Low engine oil level | If the message does not disappear after filling the oil, then let the power unit operate in the thermodynamic cycle, since the instrument cluster is normal |
| Oil Pressure Low – Stop Engine | Low engine oil pressure - stop the engine | Bringing the indicator into line |
| Program Cluster | Program the instrument cluster | Performed after replacing devices or when information appears on the display. the center of such a message. We recommend carrying it out using the SPS system |
| Service Vehicle Soon | The next vehicle maintenance is approaching | The error is displayed when a problem is detected by the ECM engine control unit |
| Vehicle Overspeed | Speeding car | Reduce speed |
Ignition system
Poor fuel quality and failure to comply with maintenance schedules can lead to problems in igniting the fuel-air mixture. Most often one or more spark plugs fail. The car, as a rule, does not stop starting immediately. This is preceded by some symptoms:
- engine troits;
- starting becomes difficult;
- engine power decreases;
- fuel consumption increases;
- The Check Engine light comes on.
The emergence of Check Engine
To diagnose spark plugs, it is recommended to unscrew them and visually inspect them. The presence of carbon deposits or mechanical damage indicates the need to install a new kit.
Poor condition of spark plugs
Debugg
Having discovered a problem, you need to fix it. How this can be done is described above. By undergoing scheduled maintenance or replacing parts.
If you doubt the correctness of your actions, it is better to turn to specialists. Remember that the electronics of any modern car require very careful handling. After repair work, be sure to reset the errors.
This is done by disconnecting the terminal from the battery for a few seconds. Before doing this, turn off the ignition. Be sure to re-diagnostics and make sure that the errors are gone.
What to do if the Chevrolet Cruze won’t start, how to fix it
Before writing why the Chevrolet Cruze won’t start, I thought about describing serious problems. However, after reading the Chevrolet Cruze Club forum, I realized that people do not know the most basic things, and car owners are faced with problems that it is indecent for a more or less experienced driver to even talk about. So let's begin.
The key does not turn in the ignition switch
I thought everyone knew that when the steering wheel is locked normally the key does not turn. However, as practice has shown, this is a problem for many. What should be done?
You need to lightly twitch the steering wheel with your left hand and at the same time turn the key.
This is one reason, there is another. If your car is equipped with an automatic transmission, then the key is also locked until you put the handle in the parking position (“P”). This is the so-called foolproof protection.
Doesn't start, starter doesn't turn, doesn't respond to key fob
This is a basic thing that not everyone knows. If your Chevrolet Cruze does not start, the starter does not turn, the car does not respond to the alarm key fob, this usually happens in cases where your battery is low. Most often, the battery is dead forever.
But in order to get there, you can start the car using another car. The process is called "smoking". Using special terminals, they are sold in abundance in car dealerships, you connect the battery to someone else's car. To do this, you need to connect the wire with “+” to its plus, and, accordingly, “-” to the minus. After which the car comes to life and you can start it. After this, the car is powered using the starter, and you can drive to the service center. And even start it once or twice. However, if you leave the car for a long period of time, the entire operation must be repeated again.
The starter turns poorly
Of course, the first thing that comes to mind is a dead battery. However, this is not always the case. Before damaging the battery, check the condition of the terminals. If the terminals are oxidized, which can be seen visually, then the contact is poor and the starter will not turn well.
This problem is usually solved by cleaning the terminals with sandpaper.
But this is not the only problem that may exist. If the condition of the terminals is normal, you also need to check how securely the negative wire is attached to the car body. Sometimes poor wire contact can cause the Chevrolet Cruze to not start and the starter to turn.
Battery charging relay is faulty
Although this problem is mentioned in passing in the section above. It’s worth talking about it in more detail, since many owners of almost new cars have a question: why won’t the Chevrolet Cruze start?
The fact is that for some reason this malfunction is very poorly diagnosed at the stations of official dealers, and owners of almost new Cruzes turn there.
Code 89
After analyzing, so to speak, the childish reasons why the Chevrolet Cruze does not start, we move on to more serious ones. One of them is when your Cruze does not start and Code 89 lights up on the instrument panel.
For some reason, there is an opinion on the Internet that in this way the car informs the driver about scheduled maintenance. However, it is not. In fact, in this way the machine informs that the thermostat is faulty.
Appearance of a faulty thermostat: the terminals have completely oxidized and disappeared
This error can be eliminated by replacing the thermostat. But this operation will not affect starting the engine.
Clutch limit switch malfunction
The Chevrolet Cruze has an electronic clutch. That is, there is no mechanical connection, in the form of a cable, between the pedal and the clutch. Another feature of this brand of car is that it will not start without the clutch pedal being depressed; there is a corresponding lock.
Sometimes this situation happens. You squeeze the clutch and start turning the engine with the starter, but the Chevrolet Cruze does not start the first time. Of course, this situation should not exist. The car should start, as they say, in a jiffy.
The reason for this situation often lies in a malfunction of the clutch limit switch. Before changing it, you should first clean all the contacts. Usually the cause of this malfunction is oxidized clutch limit contacts. If this procedure does not correct the situation, then, apparently, you will have to change this very limit switch.
Clutch limit switch on a Chevrolet Cruze
Poor or does not start at all when cold
This is a very large layer of faults that have the same symptoms - the Chevrolet Cruze does not start when cold or starts very poorly. There will be several reasons:
Fuel pump is faulty
Most often this malfunction appears while driving. The car drives, but suddenly the speed drops and it stalls, after which the car does not start. Unfortunately, this malfunction cannot be fixed on the spot with improvised hands; the car must be dragged either to a service center or to a place where you will troubleshoot the malfunction yourself.
This malfunction can only be diagnosed after removing the tank.
Diagnostics is carried out by applying voltage directly to the fuel pump. If it does not respond, then a fault has been found. The fuel pump needs to be replaced. If, on the contrary, after applying voltage directly the pump works, then you need to look for the fault in the integrity of the electrical circuits going to the fuel pump.
After you have removed the fuel pump from the tank, you need to remove it from the plastic cup. This is not an easy task, since it is attached to three plastic pins and sealant.
This is what the fuel pump looks like
The plastic cup it comes in
Actually, after this you can put everything back together in reverse order.
VAZ fuel pump in Cruz’s “glass”
Summary
In this material, I tried to describe the main reasons why the Chevrolet Cruze does not start. Naturally, there may be other reasons, but the most typical and common ones are described here on Cruises.
I hope this material was useful to those who are used to repairing their cars themselves.
Chevrolet Cruze 2011 - electrical and electronics
Essentially, it means that the motor is running only to get to the service on its own. It is not recommended to drive for a long time with the warning light on. This can lead to serious damage. Therefore, my diagnostician told me that I can try, but this is really not a panacea, anyway, after a certain period of time, it will need to be changed.
I want to say right away that the cost is considerable; the Chevrolet Aveo has an original throttle assembly that starts in rubles.
But I got carried away, it’s not the throttle! Almost the same situation as with the throttle.
THROTTLE VALVE PROBLEMS Chevrolet Aveo T300, OPEL ASTRA J
The gas pedal also has the same block and 4 tracks with 4 contacts. As you probably understood, contact 4 breaks, only at the pedal. Again, you can bend it and restore it, but you can also replace it immediately with a new pedal.
Fortunately, the cost for the Chevrolet Aveo - Cruz is about rubles, for the original. But the Opel Astra is about - r. But again, this reason is not mine.
To be honest, the diagnostician struggled with the car for almost a day. Cheap solution, my problem I didn’t specifically combine it with the first four, I want to dwell on my problem in more detail. One more warning - before you get into your brains and electronics, remove the battery terminals! But as he says, all the latest changes and information on new car models immediately appear not only on GM, but on all cars from our TAZOVs to Infinity. Not one ELM from China has such information, and certainly not!
Chevrolet Cruze: error code 84
The error could not be reset. While I was waiting for the ordered sensor, I asked to reflash the control unit, which also did not help. The only hope left was to replace the absolute pressure sensor.
The replacement did not change the situation, the check with the error continues to light, resetting the error did not bring any results. Having studied the problem among car enthusiasts on the Internet who had errors on the display and among those who installed a Pedalbooster, we can draw conclusions: The decrease in engine power that appears on the display error 84 occurs due to various engine problems - from an unstable plug in the electronic pedal socket, to an open circuit in the electrical circuit of the electronic control unit ECU.
DIY Chevrolet Cruze diagnostics
You can diagnose the car yourself. However, if a visual inspection does not require the use of special tools, then they will definitely be needed to carry out various measurements. To conduct independent computer diagnostics, you will also need to purchase a scanner. Some scanner models can work not only with computers, but also with smartphones. The device is connected to the diagnostic connector and communicates with a smartphone via Bluetooth. Prices for scanners for Chevrolet Cruze vary greatly and start from several thousand rubles.
Malfunction of fuel equipment
The lack of fuel, its insufficient amount in the tank causes difficulty starting the engine. The fuel pump cannot fully pump gasoline due to its low level. The possibility of spark plugs becoming clogged with fuel should not be ruled out.
Among motorists it is customary to say “the candles were thrown.” Lack of fine tuning of the power system leads to excessive fuel supply.
Step #1: Diagnostics begins with the exhaust pipe. A light blue smoke after several turns of the starter will indicate fuel entering the combustion chambers and ignition.
Step No. 2: turn out the spark plugs one by one, inspect the integrity of the electrode, base, and “filling” with fuel or oil. The presence of the latter will indicate a loss of tightness of the fuel injectors. High-voltage wires are also subject to inspection. Gusts, cracks, bends prevent a stable supply of voltage to the spark plugs.
Step No. 3: cleaning elements of fuel equipment. The Chevrolet Cruze 1.6 has two pre-installed filters: coarse and fine.
Due to clogging, the pump creates excess pressure for injection, which causes premature wear. Damage to the fuel line causes air to leak into the system. Characteristic signs of depressurization are the presence of gasoline leaks.
