For definition of codes of malfunction in the OBD1 system just it is necessary to disunite the test socket located under the dashboard. But definition of codes of malfunctions in the OBD2 system requires use of the special device for viewing of codes of malfunctions. For performing diagnostics of system of reduction of toxicity of exhaust gases and management of operation of the engine it is desirable to use the digital voltmeter which has high entrance resistance and does not influence work of the checked chain (see rice. Digital voltmeter).
For definition of codes of malfunctions and the analysis of control systems of the engine it is necessary to use special scanners (see rice. Scanner).
The ECM block contains the built-in system of self-diagnostics which finds and classifies malfunctions in electric chains. When the ECM module finds malfunction, the control lamp of "check engine" lights up, malfunction is identified, and the code of malfunction registers in memory and remains in it.
There are four ways of self-diagnostics of malfunction of the engine. The control lamp of "check engine" lights up if there is a malfunction in U-way.
|
Malfunction codes
|
Electric chain or system
|
Probable cause
|
| Code 11 (one long flash, one short flash) | Sensor or electric chain of an angle of rotation of a bent shaft | There is no reason |
| Code 12 (one long flash, two short flashes) | Starter switch | The switch of a starter remains constantly included or switched off |
Code 13 (one long
three short flash)
| Sensor of an angle of rotation of the camshaft | There is no reason |
| Code 14 (one long flash, four short flashes). | Fuel nozzle 1 | Indistinct work of a fuel nozzle |
| Code 15 (one long flash, five short flashes). | Fuel nozzle 2 | Indistinct work of a fuel nozzle |
| Code 16 (one long flash, six short flashes) | Fuel nozzle 3 | Indistinct work of a fuel nozzle |
| Code 17 (one long flash, seven short flashes) | Fuel nozzle 4 | Indistinct work of a fuel nozzle |
Code 21 (two long flashes, one short flash)
| Sensor of temperature of cooling liquid | The sensor or electric chain of the sensor work with failures |
| Code 22 (two long flashes, two short flashes) | Detonation sensor | The electric chain of the sensor is torn off or closed |
| Code 23 (two long flashes, three short flashes) | Air stream sensor | The electric chain of the sensor is torn off or closed |
| Code 24 (two long flashes, four short flashes) | Air adjusting valve | The electric chain of the valve is torn off or closed |
| Code 31 (three long flashes, one short flash) | Sensor of provision of a butterfly valve | The electric chain of the sensor is torn off or closed |
| Code 32 (three long flashes, two short flash) | Oxygen sensor | The electric chain of the sensor of oxygen is torn off |
| Code 33 (three long flashes, three short flashes) | Car speed sensor | There is no car speed sensor signal |
| Code 35 (three long flashes, five short flashes) | Electromagnetic valve of cleaning | The electromagnetic valve of cleaning is constantly included or switched constantly off |
| Code 41 (four long flashes, one short flash) | Composition of fuel mix | Not optimum ratio of fuel mix |
| Code 42 (four long flashes, two short flash) | Switching signal | Wrong signal of switching |
| Code 44 (four long flashes, four short flashes) | Executive mechanism of the gate | The valve of the executive mechanism of the gate is faulty |
| Code 45 (four long flashes, five short flashes) | Atmospheric sensor | The atmospheric sensor is faulty |
| Code 49 (four long flashes, nine short flashes) | Air stream sensor | The air stream sensor is faulty |
| Code 51 (five long flashes, one short flash). | Neutral switch | The neutral switch remains in constantly included situation |
| Code 51 (five long flashes, one short flash) | Starter lock | The switch of blocking remains constantly in the included situation |
| Code 52 (five long flashes, two short flashes) | Dimensional switch | The switch of the parking remains in constantly included situation |
Malfunction codes in system of self-diagnostics of OBD2 consist of five figures.
Codes of malfunction of system of self-diagnostics of OBD2
|
Code
|
Malfunction
|
|
R0100
| the electric chain or the sensor of a stream of air (MAF) is faulty |
|
R0101
| wrong indication of the sensor of a stream of air (MAF) |
|
R0102
| low voltage of the sensor of a stream of air (MAF) |
|
R0103
| high voltage of the sensor of a stream of air (MAF) |
|
R0105
| the electric chain or the sensor of pressure is faulty |
|
R0106
| inexact indication of the sensor of pressure |
|
R0107
| low voltage of the sensor of pressure |
|
R0108
| high voltage of the sensor of pressure |
|
R0115
| the electric chain or the sensor is faulty |
|
R0116
| low signal from the sensor of temperature of cooling liquid (EST) |
|
R0117
| high signal from the sensor of temperature of cooling liquid (EST) |
|
R0120
| malfunction of an electric chain or sensor of provision of a butterfly valve (TPS) |
|
R0121
| wrong indication of the sensor of provision of a butterfly valve (TPS) |
|
R0122
| low signal from the sensor of provision of a butterfly valve (TPS) |
|
R0123
| high signal from the sensor of provision of a butterfly valve (TPS) |
|
R0125
| low temperature of cooling liquid |
|
R0130
| the electric chain or the sensor of oxygen is faulty |
|
R0133
| the slowed-down signal from the oxygen sensor |
|
R0135
| malfunction of an electric chain of a heater of the sensor of oxygen |
|
R0136
| malfunction of an electric chain of the lower sensor of oxygen |
|
R0139
| the slowed-down signal from the lower sensor of oxygen |
|
R0141
| malfunction of an electric chain of a heater of the lower sensor of oxygen |
|
R0170
| non-optimal ratio fuel mixes |
|
R0181
| wrong indication of the sensor of temperature |
|
R0182
| low signal from temperature sensor |
|
R0183
| high signal from temperature sensor |
|
R0201
| the fuel nozzle 1 is faulty |
|
R0202
| the fuel nozzle 2 is faulty |
|
R0203
| the fuel nozzle 3 is faulty |
|
R0204
| the fuel nozzle 4 is faulty |
|
R0261
| low signal in an electric chain of a fuel nozzle 1 |
|
R0262
| high signal in an electric chain of a fuel nozzle 1 |
|
R0264
| low signal of an electric chain of a fuel nozzle 2 |
|
R0265
| high signal of an electric chain of a fuel nozzle 2 |
|
R0267
| low signal of an electric chain of a fuel nozzle 3 |
|
R0268
| high signal of an electric chain of a fuel nozzle 3 |
|
R0270
| low signal of an electric chain of a fuel nozzle 4 |
|
R0271
| high signal of an electric chain of a fuel nozzle 4 |
|
R0301
| admissions of ignition of the cylinder No. 1 are found |
|
R0302
| admissions of ignition of the cylinder No. 2 are found |
|
R0303
| admissions of ignition of the cylinder No. 4 are found |
|
R0304
| admissions of ignition of the cylinder No. 4 are found |
|
R0325
| malfunction of an electric chain of the sensor of a detonation |
|
R0335
| malfunction of an electric chain of the sensor of an angle of rotation of a bent shaft |
|
R0336
| the distorted signal of the sensor of an angle of rotation of a bent shaft |
|
R0340
| the electric chain of the sensor of position of the camshaft is faulty |
|
R0341
| the distorted signal of the sensor of provision of distribution of the camshaft |
|
R0400
| malfunction of system of repeated combustion of exhaust gases (EGR) |
|
R0403
| malfunction of an electric chain of system of repeated combustion of exhaust gases (EGR) |
|
R0420
| low efficiency of the catalyst |
|
R0440
| malfunction in system of catching of vapors of fuel (EVAP) |
|
R0441
| malfunction in system of cleaning of catching of vapors of fuel (EVAP) |
|
R0443
| malfunction of an electric chain or adjusting valve of cleaning of the EVAP system |
|
R0446
| malfunction of the gate of the EVAP system |
|
R0451
| wrong signal of the sensor of pressure of the fuel tank of the EVAP system |
|
R0452
| low signal of the sensor of pressure of the fuel tank of the EVAP system |
|
R0453
| high signal of the sensor of pressure of the fuel tank of the EVAP system |
|
R0461
| wrong signal of the fuel level sensor |
|
R0462
| low signal in a chain of the fuel level sensor |
|
R0463
| high signal in a chain of the fuel level sensor |
|
R0500
| malfunction of an electric chain or VSS |
|
R0505
| malfunction in system of the control air valve (IAC) |
|
R0506
| too low turns of idling |
|
R0507
| too high turns of idling |
|
R0600
| malfunction of communication lines |
|
R0601
| internal error of memory of the control unit |
|
R0703
| malfunction of the switch of stoplights |
|
R0705
| malfunction of an electric chain or the sensor of the included transfer |
|
R0710
| malfunction of an electric chain or the sensor of temperature of oil in the transmission |
|
R0720
| malfunction of an electric chain of the VSS system |
|
R0725
| malfunction in an electric chain of turns of the engine |
|
R0731 – R0734
| wrong transfer relation |
|
R0740 and R0743
| malfunction of the hydrotransformer |
|
R0748 – R0763
| malfunction of the electromagnetic valve |
