With on-board diagnostics (OBD)
The vehicle's MIL will illuminate when there is a problem with the engine management system. However, the MIL will not come on after three engine starts if the previously detected fault does not reappear. After turning on the ignition (before engine start) the control lamp is constantly on, which indicates the normal operation of the troubleshooting system. Pilot lamp with system «OBD» lights up when there are malfunctions in the following elements of the system:
- catalytic converter;
- fuel system;
- air flow meter;
- absolute pressure sensor in the intake manifold;
- temperature sensor of the air entering the engine;
- coolant temperature sensor;
- throttle position sensor;
- upper oxygen sensor;
- lower oxygen sensor heater;
- lower oxygen sensor;
- upper oxygen sensor heater;
- fuel injectors;
- misfiring;
- crankshaft angle sensor;
- camshaft position sensor;
- fuel vapor recovery system;
- vehicle speed sensor;
- idle speed control valve;
- electrical supply;
- ESM;
- malfunction of the gearbox;
- acceleration sensor;
- MIL signal request;
- ignition control unit.
Without OBD (OBD)
The MIL warning lamp lights up when there are malfunctions in the engine management system. However, the MIL will not come on after three engine starts if the previously detected fault does not reappear. After turning on the ignition (before engine start) the control lamp is constantly on, which indicates the normal operation of the troubleshooting system.
The control lamp lights up when malfunctions occur in the following system elements:
- heated oxygen sensor;
- absolute pressure sensor in the intake manifold;
- throttle position sensor;
- coolant temperature sensor;
- the engine crankshaft speed control modulator at idle;
- fuel injectors;
- ECM.
Examination
1. After turning on the ignition, the control lamp lights up for 5 seconds, after which it goes out.
2. If the control lamp does not light up, check up an electric circuit of a lamp, integrity of a safety lock and serviceability of a lamp.
Self-diagnosis
The ECM constantly monitors input and output signals and other signals under certain conditions. When a malfunction is detected, the ECM stores a DTC in memory and provides a code output to the diagnostic connector. Diagnostic codes (DTC) can be read using a MIL test lamp or a HI-SCAN scanner. Diagnostic codes remain in the memory until the wires are disconnected from the battery terminals or the connector is disconnected from the ECM, and until they are erased using the HI-SCAN scanner.
Note. If the connector is disconnected with the ignition on, a DTC will be stored in the memory. In this case, disconnect the cable from the negative terminal of the battery for more than 15 seconds, as a result of which the diagnostic memory will be erased.
1. If the same fault appears and persists for two driving cycles, the MIL will automatically turn on.
2. The MIL will not come on after three engine starts if the previously detected malfunction no longer occurs.
3. Diagnostic trouble code (DTC) is stored in the ECM memory when a malfunction is detected after two consecutive driving cycles. The MIL will come on when a malfunction is detected the second time the engine is started.
When a misfire is detected, a fault code is stored and the MIL comes on immediately after the fault is detected.
4. The DTC is automatically cleared from the ECM memory if the same fault is not detected within 40 engine start cycles.
Diagnostic Trouble Codes
With on-board diagnostics (OBD)
Code | Malfunction |
P0030 | Damage to oxygen sensor heater circuit (group 1, sensor 1) |
P0031 | Low level in oxygen sensor heater circuit (group 1, sensor 1) |
P0032 | High level in the oxygen sensor heater circuit (group 1, sensor 1) |
P0036 | Damage to oxygen sensor heater circuit (group 1, sensor 2) |
P0037 | Low level in oxygen sensor heater circuit (group 1, sensor 2) |
P0038 | High level in the oxygen sensor heater circuit (group 1, sensor 2) |
P0106 | Violation of the characteristics of the sensor of absolute air pressure |
P0107 | Low signal level of the absolute pressure sensor |
P0108 | High signal level of the absolute pressure sensor |
Р0112 | Low air temperature sensor signal |
Р0113 | High air temperature sensor signal |
Code | Malfunction |
P0116 | Damage to the electrical circuit of the coolant temperature sensor |
P0117 | Low coolant temperature sensor signal |
P0118 | High coolant temperature sensor signal |
P0121 | Damage to the electrical circuit of the throttle position sensor |
P0122 | Throttle position sensor signal low |
P0123 | Throttle position sensor signal high |
P0130 | Damage to the electrical circuit of the oxygen sensor (group 1, sensor 1) |
P0131 | Low oxygen sensor signal |
P0132 | High oxygen sensor signal (group 1,. sensor!) |
P0133 | Slow oxygen sensor response (group 1, sensor 1) |
P0134 | Poor Oxygen Sensor Performance |
P0136 | Oxygen Sensor Circuit Malfunction (group 1, sensor 2) |
Code | Malfunction |
P0137 | Low signal level of the heated oxygen sensor (group 1, sensor 2) |
P0138 | High signal level of the heated oxygen sensor (group 1, sensor 2) |
P0140 | Checking the measurement range of the oxygen sensor |
P0171 | Relean mixture (group 1) |
P0172 | Re-enrichment of the mixture (group 1) |
P0230 | Fuel pump circuit malfunction |
PG261 | Low level of the control signal to the nozzle of the 1st cylinder |
P0264 | Low level of the control signal to the nozzle of the 2nd cylinder |
PQ267 | Low level of the control signal to the injector of the 3rd cylinder |
P0270 | Low level of the control signal to the nozzle of the 4th cylinder |
P0262 | High level of the control signal to the nozzle of the 1st cylinder |
P0265 | High level of the control signal to the nozzle of the 2nd cylinder |
P0268 | High level of the control signal to the nozzle of the 3rd cylinder |
P0271 | High level of the control signal to the nozzle of the 4th cylinder |
P0300 | Random misfires |
P0301 | Misfiring in the 1st cylinder |
P0302 | Misfires in the 2nd cylinder |
P0303 | Misfires in the 3rd cylinder |
P03C4 | Misfires in the 4th cylinder |
P0325 | Damage to the electrical circuit of the knock sensor (group 1) |
P0335 | Crankshaft Position Sensor Circuit Malfunction |
P0336 | Incorrect signal characteristic of the crankshaft position sensor |
P0340 | Camshaft Position Sensor Circuit Malfunction |
P0420 | Reducing the efficiency of the main catalytic converter (group 1) |
P0444 | An open in the canister purge solenoid valve circuit |
P0445 | Short circuit in the canister purge solenoid valve circuit |
P0501 | Inappropriate characteristics of the vehicle speed sensor signal |
P0506 | Low engine crankshaft speed at idle |
P0507 | High engine crankshaft speed at idle |
P0562 | Low voltage level of the vehicle's on-board network |
P0563 | High voltage level of the car's on-board network |
P0605 | ECM Read Only Memory Error |
P1307 | Acceleration Sensor Malfunction |
P1308 | Low acceleration sensor signal |
Code | Malfunction |
R1309 | High acceleration sensor signal |
R1505 | Low signal level on the winding No. 1 of the idle speed regulator |
R1506 | High signal level on the winding No. 1 of the idle speed regulator |
R1507 | Low signal level on the winding No. 2 of the idle speed regulator |
R1508 | High signal level on the winding No. 2 of the idle speed regulator |
R1586 | Coding signal chain mismatch |
R1690 | SMATRA immobilizer malfunction |
R1691 | Antena immobilizer malfunction |
R1693 | Immobilizer Translonder Malfunction |
R1694 | Engine control unit error |
R1695 | Error in electrically erasable read-only memory |
Without OBD (OBD)
Code | Malfunction |
P0031 | Low level in oxygen sensor heater circuit (group 1, sensor 1} |
P0032 | High level in the oxygen sensor heater circuit (group 1, sensor 1) |
ROUT | Low signal level of the absolute pressure sensor |
P0108 | High signal level of the absolute pressure sensor |
Р0112 | Low air temperature sensor signal |
Р0113 | High air temperature sensor signal |
P0116 | Damage to the electrical circuit of the coolant temperature sensor |
P0117 | Low coolant temperature sensor signal |
P0118 | High coolant temperature sensor signal |
P0121 | Damage to the electrical circuit of the throttle position sensor |
P0122 | Throttle position sensor signal low |
P0123 | Throttle position sensor signal high |
P0130 | Damage to the electrical circuit of the oxygen sensor (group 1, sensor 1) |
P0131 | Low oxygen sensor signal |
P0132 | High oxygen sensor signal (group 1, sensor 1) |
P0133 | Slow oxygen sensor response (group 1, sensor 1) |
P0134 | Poor Oxygen Sensor Performance |
P0171 | Relean mixture (group 1) |
P0172 | Re-enrichment of the mixture (group 1) |
P0230 | Fuel pump circuit malfunction |
P0261 | Low level of the control signal to the nozzle of the 1st cylinder |
Code | Malfunction |
P0264 | Low level of the control signal to the nozzle of the 2nd cylinder |
P0267 | Low level of the control signal to the nozzle of the 3rd cylinder |
P0270 | Low level of the control signal to the nozzle of the 4th cylinder |
P0262 | High level of the control signal to the nozzle of the 1st cylinder |
P0265 | High level of the control signal to the nozzle of the 2nd cylinder |
P0268 | High level of the control signal to the nozzle of the 3rd cylinder |
P0271 | High level of the control signal to the nozzle of the 4th cylinder |
P0325 | Damage to the electrical circuit of the knock sensor (group 1) |
P0335 | Crankshaft Position Sensor Target Malfunction |
P0336 | Incorrect signal characteristic of the crankshaft position sensor |
P0340 | Camshaft Position Sensor Circuit Malfunction |
P0501 | Inappropriate characteristics of the vehicle speed sensor signal |
Code | Malfunction |
P0506 | Low engine crankshaft speed at idle |
P0507 | High engine crankshaft speed at idle |
P0562 | Low voltage level of the vehicle's on-board network |
P0563 | High voltage level of the car's on-board network |
Р0605 | ECM Read Only Memory Error |
R1505 | Low signal level on the winding No. 1 of the idle speed regulator |
R1506 | High signal level on the winding No. 1 of the idle speed regulator |
R1507 | Low signal level on the winding No. 2 of the idle speed regulator |
R1508 | High signal level on the winding No. 2 of the idle speed regulator |
R1586 | Coding signal chain mismatch |
R1690 | SMATRA immobilizer malfunction |
R1691 | Antena immobilizer malfunction |
R1693 | Immobilizer transponder malfunction |
R1694 | Engine control unit error |
R1695 | Error in electrically erasable read-only memory |