Read fault codes without a tester
1. Prepare the vehicle for inspection as follows.
a) Check that the battery is in good working order, as the fault can not be determined if the battery voltage is low.
b) Switch off all additional equipment.
c) Set the gearshift lever to neutral or the selector lever to “N”.
Caution: Do not disconnect the battery until the diagnostic results are completely read out, as the DTC will be removed from the ECU memory when the battery pack or the engine control module connector is disconnected.
2. Turn the ignition switch to the “OFF” position.
3. When checking with the “Check Engine” warning lamp using a special test lead harness, connect the “DCT” terminal of the diagnostic socket to the ground.
4. Check with a voltmeter.
a) Connect the voltmeter to the terminals “EDC” (diagnostic output) and “GND” (ground) of the diagnostic socket.
b) Turn the ignition key to the “ON” position and read the fault codes according to the oscillations of the voltmeter’s arrow.
5. When checking with a test lamp, turn the ignition switch to “ON” and read the fault codes according to the number of flashes of the engine warning lamp (“CHECK ENGINE”).
6. Determination of the DTC.
a) The fault code consists of two digits, the first digit is determined by the original series of flashes, then after a pause of 2 seconds a second series of flashes follows, which corresponds to the second digit of the code.
b) If two or more fault codes are detected, the smallest code will be displayed first, and then the remaining codes in ascending order of numbers. Between the codes there will be a 3-second pause.
c) If there is no fault, the indicator will blink at 0.5 second intervals.
d) If the diagnostic trouble codes are missing and the normal status code is not displayed, replace the engine control unit.
Removal of diagnostic trouble codes
Note: After performing the repair, remove the fault codes from the memory of the control unit.
1. Turn the ignition switch to the “OFF” position.
2. After disconnecting the wire from the battery terminal (-) for 10 seconds or more, reconnect the wire to the terminal.
3. Start the engine and after warming-up let it run at idling speed
4. When the ignition switch key is in the “ON” position, read the fault codes and make sure that the normal status code is output.
Table of Diagnostic Trouble Codes
11 Accelerator Pedal Position Sensor (APS)
12 Boost pressure sensor
13 Absolute pressure sensor in the intake manifold (built-in)
14 Fuel temperature sensor
15 Engine coolant temperature sensor
16 Intake manifold air temperature sensor
17 Vehicle speed sensor
18 Shaft position sensor
21 Crankshaft Position Sensor
23 Sensor switch No. 1 of the fully depressed accelerator pedal
24 Sensor switch No. 2 of the fully depressed accelerator pedal
25 The piston sensor of the injection advancing machine
26 Fuel Injection Regulator Clutch Position Sensor
41 Throttle Control Solenoid Valve
43 Injection timing solenoid valve
46 Correction resistor (cyclic feedrate adjustment)
48 Electromagnetic fuel regulator (if fitted)
Note: – If the DTC continues to appear, although the check has shown that the systems under test are OK (no faults are found), replace the engine ECU.
– The normal state code is NOT written to the block memory
Table of diagnostic trouble codes of automatic transmission
11 – the gauge of position of the lever of management ТНВД – breakage of conducting or short circuit
22 – sensor-switch of fully depressed accelerator pedal – breakage or short circuit
32 – the sensor of the rotation speed of the output shaft of the automatic transmission – the break of the wire or the cable
38 – vehicle speed sensor – breakage or short circuit
41 – electric magnetic control valve for switching N1 – open circuit
42 – electric magnetic control valve for switching on N1 – short circuit
43 – electric magnetic control valve for switching N2 – open circuit
44 – electric magnetic control valve for switching N2 – short-circuit
47 – electric solenoid valve for torque converter lockout – open circuit
48 – electric solenoid valve for torque converter locking – short circuit
All diagnostic circuits are connected to a single diagnostic connector and have their wiring, and errors are written directly to their control units, but pin 1 in this connector is unified for monitoring by control lamps.
Reading of fault codes of control units:
Electronic 4M40:
Pin 1 is closed on the body, the key is in the ON position and we read the flashes of the Check Engine lamp.
Automatic transmission:
Pin 1 is closed on the case, the key is in the ON position and we read the A / T lamp flashes.
ABS:
Pin 1 is closed to the housing, we flip the ABS hydraulic solenoid valve relay connector, the key is in the ON position and read the ABS lamp flashes.
Fault code / description
P0100 – An open or short circuit in the air flow sensor or in its circuits.
P0101 Mass airflow sensor signal output for a permissible range
P0102 Mass air flow sensor circuit low
P0103 Mass air flow sensor circuit high
P0105 Open or short in pressure sensors in the intake manifold or in its circuits.
P0106 Absolute pressure sensor signal output beyond permissible range
P0107 Inlet air absolute pressure sensor circuit low
P0108 Intake Air Absolute Sensor Circuit High
P0110 Open circuit or short circuit in the intake air temperature sensor or in its circuits.
P0111 The intake air temperature sensor signal is outside the operating range.
P0112 Air Temperature Sensor Circuit Low
P0113 Air Temperature Sensor Circuit High
P0115 Open or short in the coolant temperature sensor or in its circuits.
P0116 Coolant temperature sensor signal output out of range
P0117 Coolant Temperature Sensor Circuit Low
P0118 Coolant Temperature Sensor Circuit High Circuit High
P0120 – An open or short in the throttle position sensor or in its circuits.
P0121 Throttle Position Sensor Output Threshold Out of Range
P0122 Throttle Position Sensor Circuit Low Level
P0123 Throttle Position Sensor Circuit High
P0125 The engine warms up too long, which causes a delay in the activation of the oxygen sensor feedback.
P0130 Defective right front (No. 1) oxygen sensor or fuel mixture too poor (V-engine).
P0131 The signal voltage from the left front (No. 1) of the oxygen sensor is too low (V-motor).
P0132 The signal voltage from the front left (No. 1) of the oxygen sensor is too high (V-motor).
P0133 Defective left front (No. 1) oxygen sensor (fuel mixture too poor or weak heating) (V-engine).
P0134 The speed of the signal change (sensitivity) of the front (No. 1) of the left oxygen sensor is too low (V-motor).
P0135 Open or short circuit in the heater of the left front (No. 1) oxygen sensor or in its circuits (V-motor).
P0136 Open circuit or short circuit in the oxygen sensor heating circuit.
P0137 Signal voltage from the left rear (No. 2) oxygen sensor is too low (V-shaped motor) (after neutralizer)
P0138 Signal voltage from the left rear (No. 2) oxygen sensor is too high (V-motor) (after the neutralizer)
P0140 The rate of change of the signal (sensitivity) of the rear (No. 2) left oxygen sensor is too low (V-shaped motor).
P0141 Open or short circuit in the left rear (No. 2) heater of the oxygen sensor or in its circuits (V-motor).
P0143 The voltage of the signal from the oxygen sensor No. 3 on the left side is too low (V-motor).
P0144 The signal voltage from the oxygen sensor No. 3 on the left side is too high (V-motor).
P0146 The rate of change of the signal (sensitivity) of the rear (No. 3) of the left oxygen sensor is too low (V-shaped motor).
P0147 Open or short circuit in the left rear (No. 3) heater of the oxygen sensor or in its circuits (V-motor).
P0151 The signal voltage from the right front (No. 1) oxygen sensor is too low (V-motor).
P0152 The signal voltage from the front right (No. 1) of the oxygen sensor is too high (V-motor).
P0153 The right front (No. 1) defective oxygen sensor or the fuel mixture is too poor (V-shaped engine).
P0154 The rate of change of the signal (sensitivity) of the front (No. 1) of the right oxygen sensor is too low (V-shaped motor).
P0155 An open or short circuit in the heater of the front right (No. 1) oxygen sensor or in its circuits (V-motor).
P0157 The signal voltage from the right rear (No. 2) oxygen sensor is too low (V-motor).
P0158 The signal voltage from the right rear (No. 2) oxygen sensor is too high (V-motor).
P0160 The rate of change of the signal (sensitivity) of the rear (No. 2) right oxygen sensor is too low (V-shaped motor).
P0161 Open or short in the heater on the right rear (No. 2) oxygen sensor or in its circuits (V-motor).
P0170 Poor fuel mixture.
P0171 Fuel supply system too poor
P0172 Fuel supply system too rich
P0173 A rich fuel mixture.
P0174 Poor fuel mixture on the right side of the V-engine.
P0175 A rich fuel mixture on the right side of the V-engine.
P0182 The signal voltage from the fuel temperature sensor is too low.
P0183 The signal voltage from the fuel temperature sensor is too high.
P0200 Injector control circuit defective
P0201 Breakage of injector control circuit 1
P0202 Breakage of injector control circuit 2
P0203 Breakage of injector control circuit 3
P0204 Breakage of injector control circuit 4
P0205 Open or short circuit in injector control circuits No. 5.
P0206 Open or short in injector control circuits No. 6.
P0207 Open or short circuit in injector control circuits No. 7.
P0208 Open or short in injector control circuits No. 8.
P0215 Motor control solenoid control circuit is defective.
P0216 Open or short circuit in the injection timing control circuit.
P0217 Engine Cooling System Overheated
P0219 Overheating of the internal combustion engine
P0220 The voltage of the gas pedal position sensor No. 2 is not in the operating range.
P0221 The voltage of the gas pedal position sensor No. 2 is not within the operating range.
P0222 The voltage of the pedal position sensor No. 2 is not within the operating range.
P0223 The voltage of the gas pedal position sensor No. 2 is not within the operating range.
P0225 The gas pedal position sensor No. 3 voltage is not within the operating range.
P0226 The voltage of the gas pedal position sensor No. 3 is not within the operating range.
P0227 The voltage of the gas pedal position sensor No. 3 is not within the operating range.
P0228 The voltage of the gas pedal position sensor No. 3 is not within the operating range.
P0230 Fuel pump relay control circuit fault
P0231 Low voltage in fuel pump control circuit (auxiliary fuel pump).
P0232 High voltage in the control circuit of the fuel pump (auxiliary fuel pump).
P0236 The turbocharging pressure control system is defective.
P0237 The voltage from the turbocharging pressure sensor is too low.
P0238 Voltage from the boost pressure sensor is too high.
P0251 Open or closed in injection pump control circuit.
P0261 Oil injector control circuit 1 short circuit
P0262 Short circuit to the circuit or an open circuit in the injector 1
P0263 The power of cylinder No. 8 is reduced.
P0264 Short to ground for injector control circuit 2
P0265 Short circuit to the fuel circuit or an open circuit in the injector 2
P0266 The power of cylinder No. 7 is reduced.
P0267 Short circuit to earth of injector control circuit 3
P0268 Short circuit to the fuel circuit or an open circuit in the injector 2
P0269 The power of cylinder No. 2 is reduced.
P0270 Oil injector control circuit short circuit 4
P0271 Short circuit to the fuel circuit or an open circuit in the injector 4
P0272 The power of cylinder No. 6 is reduced.
P0275 The power of cylinder No. 5 has been reduced.
P0278 The power of cylinder No. 4 is reduced.
P0281 The power of cylinder No. 3 is reduced.
P0284 The power of cylinder No. 1 is reduced.
P0297 Vehicle speed exceeded Random / multiple misfires
P0301 Misfiring in cylinder 1
P0302 Ignition misfires in cylinder 2
P0303 Ignition misfires in cylinder 3
P0304 Ignition misfires in cylinder 4
Ignition misfires in the cylinder 5.
Ignition misfires in the cylinder 6.
Ignition misfires in the cylinder 7.
Ignition misfires in the cylinder 8.
P0322 The ignition control unit (switch) or its circuit is defective.
P0325 The ignition timing is too early or there is no signal from the shock sensor No. 1. The knock sensor circuit is interrupted
P0326 The ignition timing is too late.
P0327 Knock Sensor Circuit Low Level
P0328 Knock sensor circuit high level
P0330 Open or short in shock-sensor circuit No. 2.
P0335 Crankshaft Position Sensor Circuit Malfunction
P0336 Crankshaft Position Sensor Signal Out of Range
P0337 Crankshaft Position Sensor Circuit Short to Ground
P0338 Crankshaft Position Sensor Circuit Open
P0340 Camshaft Position Sensor Circuit (Phase Sensor) Circuit Malfunction
P0341 Incorrect Camshaft Position Sensor Circuit (Phase Sensor) Signal
P0342 Camshaft Position Sensor Circuit Circuit Low Signal (Phase Sensor)
P0343 Camshaft Position (Stage Sensor) Circuit High Signal Strength
P0351 Ignition coil primary circuit 1 (1/4)
P0352 Ignition coil primary circuit 2 (2/3)
P0353 Ignition coil primary circuit interruption 3
P0354 Ignition coil primary circuit interrupted 4
P0355 Ignition coil circuit no. 5 is defective.
P0356 Ignition coil circuit no. 6 is defective.
P0357 Ignition coil circuit no. 7 is defective.
P0358 Ignition coil circuit no. 8 is defective.
P0400 The EGR control circuitry is defective.
P0401 Inadequate operation of the actuator of the EGR system.
P0402 Excessive operation of the EGR actuator.
P0405 Wrong signal from the EGR position sensor.
P0406 Wrong signal from the EGR position sensor.
P0420 The exhaust gas catalytic converter (left for V-engines) is inefficient.
P0422 The efficiency of the catalyst is below acceptable
P0430 The exhaust gas catalytic converter (right-hand side of V-engines) is inefficient.
P0440 The fuel vapor removal system (EVAP) is faulty.
P0441 Incorrect air flow through the purge valves of the adsorber
P0443 Adsorber purge valve control circuit malfunction
P0444 Short circuit to the board or an open in the control circuit of the purge valve of the adsorber
P0445 Adaption purge valve control circuit short circuit
P0446 The EVAP control valve does not operate correctly.
P0450 Open circuit or short circuit in the EVAP pressure sensor circuit.
P0461 Open or short circuit in the fuel gauge circuit.
P0462 The voltage from the fuel level sensor is too low.
P0463 The voltage from the fuel level sensor is too high.
P0480 Fan relay control circuit no. 1
P0481 Fan relay control circuit no. 2
P0500 No signal from vehicle speed sensor
P0501 Speed Sensor Circuit Malfunction
P0502 The signal from the speed sensor is too small.
P0503 Intermittent speed sensor signal
P0505 Idle speed control circuit fault
P0506 Low idle speed (no load governor blocked)
P0507 High idle speed (no load governor blocked)
P0508 Idling speed control circuit short circuit to ground
P0509 Idling speed control circuit short circuit on the board
P0510 Open circuit or open circuit fault.
P0511 Open-circuit stepper control circuit open
P0560 Voltage of the system below the operating threshold
P0562 Undervoltage of the on-board network
P0563 The increased voltage of the on-board network
P0572 Brake pedal switch A: low signal level
P0573 Brake pedal switch A: high signal level
P0601 Controller ROM fault
P0602 Controller RAM Error
P0603 Internal controller RAM failure
P0604 External controller RAM failure
P0606 Controller monitoring process malfunction
P0615 Starter relay control circuit open
P0616 Short to ground of starter relay control circuit
P0617 Short to starter control relay control circuit
P0627 An open in the control circuit of the petrol pump relay
P0628 Short to ground of the control circuit of the petrol pump relay
P0629 Short to the control circuit of the petrol pump relay control circuit
P0630 VIN code storage fault or vehicle VIN code not recorded in the controller
P0645 Air Conditioning Clutch Relay Control Circuit Open
P0646 Air Conditioning Clutch Relay Closed Circuit Short Circuit
P0647 Air Conditioning Clutch Relay Circuit Short Circuit Short
P0650 Check Engine Circuit Malfunction
P0654 Dashboard tachometer circuit malfunction
P0685 Main control relay open circuit
P0687 Main control relay short circuit on the control circuit
P0688 Breakage of the power circuit from the output of the main relay
P0690 Main circuit power circuit short circuit
P0703 There is no communication between the engine control unit and the brake control unit.
P0719 Brake pedal switch B: low signal level
P0724 Brake pedal switch B: high signal level
P0831 Clutch pedal switch A: low signal level
P0832 Clutch pedal switch A: high signal level
P1102 Low resistance of the oxygen sensor heater No. 1
P1106 The signal pressure from the intake manifold pressure sensor is too high.
P1107 The signal pressure from the intake manifold pressure sensor is too low.
P1111 The signal voltage from the intake air temperature sensor is too high.
P1112 The signal voltage from the intake air temperature sensor is too low.
P1114 The signal voltage from the coolant temperature sensor is too low.
P1115 The signal voltage from the coolant temperature sensor is too high.
P1121 The signal voltage from the throttle position sensor periodically freezes at a high level.
P1122 The signal voltage from the throttle position sensor periodically freezes at a low level.
P1123 Mixture “rich” – additive correction of fuel-air mixture by air exceeds the established threshold
P1124 Mixture “poor” – additive correction of fuel-air mixture by air exceeds the established threshold
P1125 The gas pedal position monitoring system is faulty.
P1127 “Rich” mixture – the multiplicative correction of the composition of the fuel-air mixture exceeds the established threshold
P1128 Mixture “poor” – multiplicative correction of the composition of the fuel-air mixture exceeds the established threshold
P1133 Insufficient signal voltage from the left (for V-shaped engines) front oxygen sensor.
P1134 Insufficient speed of change of signal of the left (for V-shaped engines) front oxygen sensor.
P1135 O2 sensor heater defective
P1136 Mixture “rich” – additive correction of fuel-air mixture for fuel exceeds the established threshold
P1137 Mixture “poor” – additive correction of the fuel-air mixture for fuel exceeds the established threshold
P1140 Invalid air flow sensor signal
P1141 O2 Sensor Heater Malfunction
P1153 Insufficient signal voltage from the right (for V-shaped engines) front oxygen sensor.
P1154 Insufficient speed of signal change in the right (for V-shaped engines) front oxygen sensor.
P1171 Low level of CO-potentiometer signal. When the car accelerates, the fuel mixture is too poor.
P1172 High level of CO-potentiometer signal
P1200 The fuel pump relay is faulty.
P1214 An error in the injection timing system.
P1216 The response time of the fuel management solenoid is too low.
P1217 The response time of the fuel management solenoid is too long.
P1218 Diesel fuel management system is malfunctioning.
P1300 The switch or its circuit is defective.
P1335 Open circuit or short circuit in the crankshaft sensor circuits.
P1386 Error of internal test of the detonation channel
P1390 The signal from the “G” -sensor (deceleration sensor) freezes at low voltage.
P1391 “G” sensor (deceleration sensor) or its circuits are faulty.
P1392 The signal voltage from the “G” -sensor (deceleration sensor) is too low.
P1393 Signal voltage from the “G” -sensor (deceleration sensor) is too high.
P1394 The signal from the “G” -sensor (deceleration sensor) freezes at high voltage.
P1406 The EGR system control circuit is defective.
P1410 Short circuit to the control board or an open circuit of the purge valve control valve of the adsorber P1425 Short to ground of the control circuit of the purge valve of the adsorber
P1426 Disconnection of the control circuit of the purge valve of the adsorber
P1441 The EVAP system does not work at the right time.
P1500 An open in the control circuit of the petrol pump relay
P1501 Short to ground of the control circuit of the petrol pump relay
P1502 Short circuit to the fuel circuit breaker circuit or open circuit
P1508 The idle speed control system keeps the speed too low.
P1509 Idle speed control circuit overload
P1513 Idle speed control circuit short circuit
P1514 Short circuit to the vehicle or an open circuit in the control circuit of the idle speed controller P1541 An open in the control circuit of the petrol pump relay
P1570 No response from the MTA (immobilizer) or open circuit
P1571 An unregistered electronic key was used
P1572 Antenna breakage of immobilizer antenna
P1573 Internal Malfunction of APS Unit (Immobilizer)
P1600 No communication with APS (immobilizer) Battery is defective.
P1601 No connection to the MTA (immobilizer)
P1602 Vehicle voltage dropout
P1603 EEPROM of the controller
P1605 In the engine control unit, the shock sensor control circuit is faulty.
P1606 Incorrect road sensor sensor signal
P1612 Controller reset error
P1616 Rough Road Sensor Signal Low
P1617 Rough Road Sensor Signal High
P1620 Controller ROM fault
P1621 The controller’s RAM is faulty. Error in the memory of the engine control unit.
P1622 The EEPROM of the controller
P1627 An error in the memory of the cruise control unit.
P1632 Malfunction of spring 1 of the electric drive throttle заслонки
P1633 Malfunction of spring 2 of the throttle actuator
P1634 Malfunction of the throttle actuator adaptation procedure
P1635 Malfunction of adaptation procedure of the closed position of the electric drive throttle заслонки. The 5 V voltage on the engine control unit is too low.
P1636 Malfunction of the adaptation procedure for the de-energized position of the throttle actuator
P1640 The access to the EEPROM controller has failed. There is no communication between the automatic transmission control unit and the engine control unit.
P1641 The engine warning light circuit is faulty.
P1660 The cooling fan cooling fan control circuit is defective.
P1780 The chain “P” or “N” of the gear selector is defective.
P1689 Invalid error codes in controller memory
P1750 Short to the No. 1 control circuit of the No-load Torque Control
P1751 Open circuit no. 1 of the idle speed control
P1752 Short to ground on chain No. 1 of the idle speed controller P1753 Short to the control circuit No. 2 of the idle speed controller
P1754 Open circuit no. 2 of the no-load torque controller
P1755 Short to ground of chain No. 2 of the moment controller of idling P2104 The control system of the electric drive of the throttle: limitation of the operation of the engine by the mode of the OHMM
P2105 Throttle Actuator Control System: prohibit the operation of the internal combustion engine
P2106 Throttle Actuator Control System: Power Limit
P2110 Throttle Actuator Control: Speed Limit
P2112 Throttle actuator control system: Positioner error in opening direction
P2113 Throttle Actuator Control System: Position Control Error in Closure Direction
P2122 Accelerator Pedal Position Sensor Low Voltage # 1 Low
P2123 Accelerator Pedal Position Sensor High Signal No.1 High
P2127 Accelerator Pedal Position Sensor Low Voltage 2
P2128 Accelerator Pedal Position Sensor 2 Signal High
P2135 Error of correlation of throttle position sensors
P2138 Accelerator Pedal Position Sensor Correlation Error
P2299 Brake pedal position sensor error
