Ford Focus 2 error codes in Russian

Every complex mechanism, and especially such as a modern car, consists of many systems, components and assemblies. Most of them are constantly under load and the influence of various forces that can gradually destroy the materials from which the parts are made. Not a single high-quality mechanism lasts forever and is not guaranteed against periodic breakdowns. It is very convenient if such a breakdown can be quickly found and repaired.

Ford Focus 2 is equipped with a modern on-board computer, which, based on a set of symptoms, is able to determine the presence of breakdowns and recognize their causes. The computer informs the driver about detected problems using special short codes, each of which indicates a specific malfunction or error in the operation of a particular vehicle system. Therefore, it is extremely important to know what these codes mean in order to respond in time and fix the problem.

Determine the breakdown

Correctly deciphering the codes is the key to quickly identifying the cause of the problem and eliminating it. If an error code appears on your computer screen, you can contact a specialized automotive service center, where professional technicians, using specialized equipment, will carry out the necessary procedures to diagnose your Ford Focus 2. Comprehensive diagnostics will help identify the real causes of the problem. The fact is that it cannot be ruled out that problems with electronics may also provoke computer errors.

This procedure, however, is very expensive. There are several recommendations that will help you save money by diagnosing yourself. It is also worth noting that self-diagnosis is not as accurate as professional diagnostics.

So, to identify the causes of 2 problems found in your Ford Focus:

Turn on the car ignition, but do not start the engine.
Press and hold the button that resets the daily mileage on the car’s dashboard.
Hold the button down for several seconds.
Move the key to the next position without pressing the reset button.
Wait until the word “Test” appears on the odometer display.
Release the button. Pressing the key for more than 3 seconds between tests will reset the self-test process. In order to return to it, you need to start the car. During startup, the starter will automatically turn off and after a couple of seconds the computer will resume self-diagnosis.

To interrupt the self-diagnosis of the Ford Focus 2, you need to turn off the ignition and press the reset button on the odometer display for more than 3 seconds.

As a result of self-diagnosis, the on-board computer will issue cipher codes, according to which you can determine how the computer recognizes any breakdowns or malfunctions in the vehicle. Experts say you shouldn't expect highly accurate results. Thus, if the owner of a Ford Focus 2 is concerned that significant problems have occurred with the car, it is still worth seeking the help of professionals who can correctly read error information using special equipment.

How to fix error U1900 on Ford Focus 2

As a rule, resetting the on-board computer errors and removing the terminal from the battery does not really do anything. The error may disappear for a while, but will appear again. The dashboard self-test mode is also of little use - the test will be successful if at this moment the CAN bus is working normally. The only way out is to solder the contacts on the instrument panel board.

Here are the contacts that need to be soldered:

To get to them, you need to remove and completely disassemble the tidy. We do it like this:

Move the steering column as far as possible toward the driver and down.
Remove the plastic covers under the steering wheel and unscrew the two screws.
Unscrew the two screws under the tachometer and speedometer scales.
Pulling the visor up, we pry the tidy up from above and release the lock.
We take out the panel towards ourselves and disconnect the terminal block.

Video showing error U1900

Description of error codes

Without special help, it is difficult to decipher the codes that appear. To help the owner of FordFocus 2, a table is offered that explains the meanings of the codes in Russian that indicate problems with your car.

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All error codes that are generated by the on-board computer of your Ford Focus 2 can be divided into 4 groups:

sensor errors;
car engine problems;
problems in the electrical circuit;
other breakdowns.

Below are the transcripts of the most popular errors, the codes of which are presented by the on-board computer in the Ford Focus 2.

Car diagnostics

The procedure for checking engines and basic systems of Ford Focus, Transit, Mondeo and other models can be performed using the following methods:

Diagnostics using the odometer button

The diagnostic process without using third-party equipment is performed as follows:

Check with computer and diagnostic software

To obtain more accurate information about problems, you will need a computer with diagnostic software installed, as well as an adapter with a cable.

The verification procedure is carried out as follows:

The type of error output will differ depending on the vehicle model and diagnostic method.

User Denis Zaicev spoke in detail about performing computer testing of all Ford systems using special software.

Jumper diagnostics

Testing using a jumper is performed as follows (to test, a piece of wire must be equipped with a diode light bulb):

The jumper diagnostic procedure cannot be performed if the machine is equipped with a catalytic converter.

Errors that indicate malfunctions of sensors of different systems

P0100 - P0105 - correspond to an incorrect signal received from the air flow monitoring device, or its breakdown.
P0106 - P0108 - report incorrect operation of the sensor that controls air pressure, and, in addition, an inappropriate signal from the device to the on-board computer of your Ford Focus 2.
P0110 – P0114 – the on-board computer receives incorrect data from the incoming air temperature sensor, indicating a malfunction in its operation or a malfunction of the device, and the need to change it.
P0115 - P0118 - an incorrectly detected signal from the antifreeze temperature sensor, indicating a malfunction or breakdown of the device, which can be eliminated by checking the quality of the corresponding fluid in the system or replacing a malfunctioning device.
P0120 - P0123 - indicate the need to check or replace sensor “A”, which controls the location of the throttle valve of your car.
P0130 – P0167 – error codes that describe the on-board computer receiving an inappropriate signal from the oxygen sensors. The codes indicate that at least one of the three devices is out of order or not working correctly. As a rule, an error requires a more detailed diagnosis of components with the possible subsequent replacement of failed units.
P0176 - P0179 - appear on the monitor if an incorrect signal comes to the system from the emission sensor. The problem can also be resolved by installing a new device.
P0180 - P0188 - report a breakdown of the fuel temperature monitoring device. A more detailed study and diagnosis of the problem will help identify which of the two sensors is the problem and whether it is worth changing.
P0190 - P0194 - it is necessary to check the fuel pressure sensor in the fuel rail and, if necessary, replace it with a new one.
P0195 - P0199 - they say that the device measuring the temperature of the engine fluid does not work; errors may also indicate the presence of a short circuit or possible breaks in the circuit.
P0220 – P0229 – interruptions in the operation of the throttle position sensor “B” or “C”.
P0235 – receipt of an incorrect signal from the turbocharger pressure sensor. If an error occurs, it is recommended to diagnose the circuit for opens and short circuits.
P0236 – P0242 – error codes warning about the need to replace the sensors of the first and second turbines.
P0326 - P0329 - the knock sensor transmits an incorrect signal to the FordFocus 2 on-board computer, indicating the need for additional diagnostics or replacement of the unit.
P0330 - P0334 - the second knock sensor does not work correctly.
P0335 - P0339 - a signal to the car owner about a breakdown or incorrect signal coming from the first crankshaft position sensor.
P0340 - P0344 - these errors inform the driver about malfunctions in the operation of the crankshaft monitoring device.
P0171 - P0172 - the engine receives a too rich or lean mixture.
P0173 – possible fuel leakage from the fuel system.
P0174 - P0175 - these error codes repeat the first ones in this list, indicating that an incorrect mixture has entered the engine.
P0215 – failure of the solenoid that turns on the motor. The error usually occurs when there are problems with starting, or the engine stutters when turned off. If this occurs, the solenoid should be replaced.
P0216 is a code indicating an open or short circuit in the circuit for controlling the frequency of fuel injection into the engine. A more thorough diagnosis comes down to a full check of the circuit.
P0217 – signal about increased engine temperature. May indicate deterioration of the antifreeze.
P0218 – increased temperature in the transmission, leading to incorrect operation of the gearbox.
P0219 – engine operation at too high speeds.
P0243 – P0246 – interruptions in the operation of the first (A) exhaust shutter solenoid or transmission of an incorrect signal from the device to the computer.
P0247 - P0250 - the second (B) exhaust solenoid fails. As in the previous case, the device must be replaced.
P0251 – P0255 – message about interruptions in the functioning of the injection pump of the first turbine. A more detailed diagnosis of the circuit for opens and short circuits is required.
P0256 – P0260 – malfunctions in the operation of the pump of the second turbine, indicating a breakdown or transmission of an incorrect signal by the sensor.
P0261 – P0296 – problems in the operation of the injectors, which can be expressed in incorrect operation of the injector driver, a break or short circuit in the electrical circuit. To clarify the problem, the circuit is diagnosed, and then, if no faults are identified, the functionality of all injectors is checked to detect a non-working one that needs to be replaced.
P0300 – one-time or systematic misfires.
P0301 – P0312 – misfire detected in one of the cylinders.
P0410 - the on-board computer has detected problems in the secondary air supply system, possibly related to a leak.
P0410 - P0417 - evidence of a breakdown of the secondary air supply valve and incorrect supply of the mixture.
P0420 – interruptions in the functioning of the catalyst system.

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Error codes indicating engine problems

P0171 - P0172 - the engine receives a too rich or lean mixture.
P0173 – possible fuel leakage from the fuel system.
P0174 - P0175 - these error codes repeat the first ones in this list, indicating that an incorrect mixture has entered the engine.
P0215 – failure of the solenoid that turns on the motor. The error usually occurs when there are problems with starting, or the engine stutters when turned off. If this occurs, the solenoid should be replaced.
P0216 is a code indicating an open or short circuit in the circuit for controlling the frequency of fuel injection into the engine. A more thorough diagnosis comes down to a full check of the circuit.
P0217 – signal about increased engine temperature. May indicate deterioration of the antifreeze.
P0218 – increased temperature in the transmission, leading to incorrect operation of the gearbox.
P0219 – engine operation at too high speeds.
P0243 – P0246 – interruptions in the operation of the first (A) exhaust shutter solenoid or transmission of an incorrect signal from the device to the computer.
P0247 - P0250 - the second (B) exhaust solenoid fails. As in the previous case, the device must be replaced.
P0251 – P0255 – message about interruptions in the functioning of the injection pump of the first turbine. A more detailed diagnosis of the circuit for opens and short circuits is required.
P0256 – P0260 – malfunctions in the operation of the pump of the second turbine, indicating a breakdown or transmission of an incorrect signal by the sensor.
P0261 – P0296 – problems in the operation of the injectors, which can be expressed in incorrect operation of the injector driver, a break or short circuit in the electrical circuit. To clarify the problem, the circuit is diagnosed, and then, if no faults are identified, the functionality of all injectors is checked to detect a non-working one that needs to be replaced.
P0300 – one-time or systematic misfires.
P0301 – P0312 – misfire detected in one of the cylinders.
P0410 - the on-board computer has detected problems in the secondary air supply system, possibly related to a leak.
P0410 - P0417 - evidence of a breakdown of the secondary air supply valve and incorrect supply of the mixture.
P0420 – interruptions in the functioning of the catalyst system.

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