Table 4 - Error codes and parameters for performing ECU diagnostics
Code | Description and diagnostics |
401001 | Failure in the front left EMC intake circuit 1 Replace the ECU GA |
401101 | Failure in the front left EMC exhaust circuit 1 Replace the ECU GA |
401401 | Failure in the front right EMC intake circuit 1 Replace the ECU GA |
401501 | Failure in the front right EMC exhaust circuit 1 Replace the ECU GA |
401801 | Failure in the intake rear left EMC circuit 1 Replace the ECU GA |
401901 | Failure in the rear left EMC exhaust circuit 1 Replace the ECU GA |
401C01 | Failure in the intake circuit of the rear right EMC 1 Replace the ECU GA |
401D01 | Failure in the rear right EMC exhaust circuit 1 Replace the ECU GA |
402049 | Internal malfunction of the EWH 1 Replace the ECU GA |
403029 | Failure or invalid signal from front left DSC 1 Check that the tire and wheel sizes correspond to those specified in the operating manual. In case of discrepancy, replace. 2 Check the rotor for cleanliness. If contaminated, clean. 3 Check the gap between the DSC and the rotor (0.45-1.55) mm. In case of discrepancy, check for deformations of the DSC, rotor and bracket. Replace damaged parts. Check the screw that secures the DSC to the bracket. Tighten if necessary. 4 Check the electrical circuit and the DSC for open and short circuits. Replace damaged parts. If the circuit is in good condition, the DSC has no breaks or short circuits, and the fault code does not disappear, replace the DSC with a known good one. If replacing the DSC with a known good one does not help, replace the GA ECU. |
403101 | Failure in the front left DSC circuit 1 Check the electrical circuit and the DSC for open and short circuits. Replace damaged parts. If the circuit is in good condition, the DSC has no breaks or short circuits, and the fault code does not disappear, replace the DSC with a known good one. If replacing the DSC with a known good one does not help, replace the GA ECU. |
403129 | Invalid signal from front left DSC 1 Check the rotor for cleanliness. If contaminated, clean. 2 Check the gap between the DSC and the rotor (0.45-1.55) mm. In case of discrepancy, check for deformations of the DSC, rotor and bracket. Replace damaged parts. Check the screw that secures the DSC to the bracket. Tighten if necessary. 3 Check the electrical circuit and the DSC for open and short circuits. Replace damaged parts. If the circuit is in good condition, the DSC has no breaks or short circuits, and the fault code does not disappear, replace the DSC with a known good one. If replacing the DSC with a known good one does not help, replace the GA ECU. |
403329 | Failure or invalid signal from the front right DSC 1 Check that the tire and wheel sizes correspond to those specified in the operating manual. In case of discrepancy, replace. 2 Check the rotor for cleanliness. If contaminated, clean. 3 Check the gap between the DSC and the rotor (0.45-1.55) mm. In case of discrepancy |
Code | Description and diagnostics |
check for deformation of the DSC, rotor and bracket. Replace damaged parts. Check the screw that secures the DSC to the bracket. Tighten if necessary. 4 Check the electrical circuit and DSC for open and short circuits. Replace damaged parts. If the circuit is in good condition, the DSC has no breaks or short circuits, and the fault code does not disappear, replace the DSC with a known good one. If replacing the DSC with a known good one does not help, replace the GA ECU. | |
403401 | Front right DSC circuit failure 1 Check the electrical circuit and the DSC for open and short circuits. Replace damaged parts. If the circuit is in good condition, the DSC has no breaks or short circuits, and the fault code does not disappear, replace the DSC with a known good one. If replacing the DSC with a known good one does not help, replace the GA ECU. |
403429 | Invalid signal from front right DSC 1 Check the rotor for cleanliness. If contaminated, clean. 2 Check the gap between the DSC and the rotor (0.45-1.55) mm. In case of discrepancy, check for deformations of the DSC, rotor and bracket. Replace damaged parts. Check the screw that secures the DSC to the bracket. Tighten if necessary. 3 Check the electrical circuit and the DSC for open and short circuits. Replace damaged parts. If the circuit is in good condition, the DSC has no breaks or short circuits, and the fault code does not disappear, replace the DSC with a known good one. If replacing the DSC with a known good one does not help, replace the GA ECU. |
403629 | Failure or invalid signal from rear left DSC 1 Check that the tire and wheel sizes correspond to those specified in the operating manual. In case of discrepancy, replace. 2 Check the rotor for cleanliness. If contaminated, clean. 3 Check the gap between the DSC and the rotor (0.2-2.3) mm. In case of discrepancy, check for deformations of the DSC, rotor and bracket. Replace damaged parts. Check the screw that secures the DSC to the bracket. Tighten if necessary. 4 Check the electrical circuit and the DSC for open and short circuits. Replace damaged parts. If the circuit is in good condition, the DSC has no breaks or short circuits, and the fault code does not disappear, replace the DSC with a known good one. If replacing the DSC with a known good one does not help, replace the GA ECU. |
403701 | Failure in the rear left DSC circuit 1 Check the electrical circuit and the DSC for open and short circuits. Replace damaged parts. If the circuit is in good condition, the DSC has no breaks or short circuits, and the fault code does not disappear, replace the DSC with a known good one. If replacing the DSC with a known good one does not help, replace the GA ECU. |
403729 | Invalid signal from rear left DSC 1 Check the rotor for cleanliness. If contaminated, clean. 2 Check the gap between the DSC and the rotor (0.2-2.3) mm. In case of discrepancy, check for deformations of the DSC, rotor and bracket. Replace damaged parts. Check the screw that secures the DSC to the bracket. Tighten if necessary. 3 Check the electrical circuit and the DSC for open and short circuits. Replace damaged parts. If the circuit is in good condition, the DSC has no breaks or short circuits, and the fault code does not disappear, replace the DSC with a known good one. If replacing the DSC with a known good one does not help, replace the GA ECU. |
403929 | Failure or invalid signal from rear right DSC 1 Check that the tire and wheel sizes correspond to those specified in the operating manual. In case of discrepancy, replace. |
Code | Description and diagnostics |
1 Check the rotor for cleanliness. If contaminated, clean. 2 Check the gap between the DSC and the rotor (0.2-2.3) mm. In case of discrepancy, check for deformations of the DSC, rotor and bracket. Replace damaged parts. Check the screw that secures the DSC to the bracket. Tighten if necessary. 3 Check the electrical circuit and the DSC for open and short circuits. Replace damaged parts. If the circuit is in good condition, the DSC has no breaks or short circuits, and the fault code does not disappear, replace the DSC with a known good one. If replacing the DSC with a known good one does not help, replace the GA ECU. | |
403A01 | Failure in the rear right DSC circuit 1 Check the electrical circuit and the DSC for open and short circuits. Replace damaged parts. If the circuit is in good condition, the DSC has no breaks or short circuits, and the fault code does not disappear, replace the DSC with a known good one. If replacing the DSC with a known good one does not help, replace the GA ECU. |
403A29 | Invalid signal from rear right DSC 1 Check the rotor for cleanliness. If contaminated, clean. 2 Check the gap between the DSC and the rotor (0.2-2.3) mm. In case of discrepancy, check for deformations of the DSC, rotor and bracket. Replace damaged parts. Check the screw that secures the DSC to the bracket. Tighten if necessary. 3 Check the electrical circuit and the DSC for open and short circuits. Replace damaged parts. If the circuit is in good condition, the DSC has no breaks or short circuits, and the fault code does not disappear, replace the DSC with a known good one. If replacing the DSC with a known good one does not help, replace the GA ECU. |
403B02 | Invalid speed signal from two or more wheels 1 Check that the tire and wheel sizes correspond to those specified in the operating manual. In case of discrepancy, replace. 2 Check the cleanliness of the rotors. If contaminated, clean. 3 Check the gaps between the DSC and the rotors. In case of non-compliance, check for deformation of the DSC, rotors and brackets. Replace damaged parts. Check the screws that secure the DSK to the brackets. Tighten if necessary. 4 Check electrical circuits and DSC for breaks and short circuits. Replace damaged parts. If the circuits are in good condition, the DSCs have no breaks or short circuits, and the fault code does not disappear, replace the DSCs with known good ones. If replacing the DSC with known good ones does not help, replace the GA ECU. |
403B29 | Invalid signal about the speed of 3 wheels 1 Check that the tire and wheel sizes correspond to those specified in the operating manual. In case of discrepancy, replace. 2 Check the cleanliness of the rotors. If contaminated, clean. 3 Check the gaps between the DSC and the rotors. In case of non-compliance, check for deformation of the DSC, rotors and brackets. Replace damaged parts. Check the screws that secure the DSK to the brackets. Tighten if necessary. 4 Check electrical circuits and DSC for breaks and short circuits. Replace damaged parts. If the circuits are in good condition, the DSCs have no breaks or short circuits, and the fault code does not disappear, replace the DSCs with known good ones. If replacing the DSC with known good ones does not help, replace the GA ECU. |
403B64 | No signal from two DSCs 1 Check that the tire and wheel sizes correspond to those specified in the operating manual. In case of discrepancy, replace. 2 Check the cleanliness of the rotors. If contaminated, clean. |
Code | Description and diagnostics |
1 Check the gaps between the DSC and the rotors. In case of non-compliance, check for deformation of the DSC, rotors and brackets. Replace damaged parts. Check the screws that secure the DSK to the brackets. Tighten if necessary. 2 Check electrical circuits and DSC for breaks and short circuits. Replace damaged parts. If the circuits are in good condition, the DSCs have no breaks or short circuits, and the fault code does not disappear, replace the DSCs with known good ones. If replacing the DSC with known good ones does not help, replace the GA ECU. | |
403C19 | Failure in the DSC circuit 1 Check the electrical circuit from the ECU to the DSC for a short circuit to positive. Replace damaged parts. |
404701 | Failure in the ECU GA pressure sensor circuit 1 Replace the ECU GA |
404729 | Invalid signal from the ECU GA pressure sensor 1 Replace the ECU GA |
40511C | The supply voltage of the steering wheel angle sensor is below or above the operating range 1 Check the generator's functionality. 2 Check the connection of the ECU head unit to ground. 3 Check the battery condition. Charge the battery if necessary. |
405129 | Invalid steering wheel angle sensor signal 1 Replace the connector with the rotating device assembly. |
406129 | Invalid lateral acceleration sensor signal 1 Replace the ECU GA |
406229 | Invalid longitudinal acceleration sensor signal 1 Replace the ECU GA |
406329 | Invalid angular acceleration sensor signal 1 Replace the ECU GA |
406349 | Internal fault of the angular acceleration sensor 1 Replace the ECU GA |
406A29 | Invalid signal from inertial acceleration sensor 1 Replace the ECU GA |
406A49 | Failure in the inertial acceleration sensor circuit 1 Replace the ECU GA |
406A54 | The inertial acceleration sensor is not calibrated 1 Calibrate the inertial acceleration sensor using a diagnostic tool. On the diagnostic device, select: Select the vehicle type - "Anti-blocking system" - "BOSCH ESP 9.0" - "4: Additional tests" - "5: Calibration deviation" - Then follow the instructions of the diagnostic device. 2 If the fault code does not disappear, replace the ECU. |
407841 | Absence in EEPROM data on the wheel circumference 1 Enter the wheel circumference into the ECU using a diagnostic tool. On the diagnostic device, select: Select the vehicle type - "Anti-blocking system" - "BOSCH ESP 9.0" - "4: Additional tests" - "4: Tire size" - Next, confirm the selection of tire size and write the data to the controller. |
421149 | Internal ECU failure 1 Replace the ECU GA |
520016 | Low voltage supply of the ECU GA 1 Check the corresponding fuse. Replace the damaged one. 2 Check the generator's functionality. |
1 Check the connection of the ECU head unit to ground. 2 Check the battery condition. Charge the battery if necessary. | |
520017 | High voltage supply of the ECU gas valve 1 Check the generator's functionality. |
52001C | Supply voltage is below or above the operating range 1 Check the corresponding fuse. Replace the damaged one. 2 Check the generator's functionality. 3 Check the connection of the ECU head unit to ground. 4 Check the battery condition. Charge the battery if necessary. |
520549 | Failure in the EMC power supply voltage switching relay circuit 1 Check the fuse F26. Replace the damaged one. 2 Check the reliability of the connection in the power supply circuit and the ground of the EMC (contacts "25" and "38" of the ECU main unit). |
520601 | High Pressure Valve 1 Power Circuit Failure 1 Replace the ECU GA |
520701 | High Pressure Valve 2 Power Circuit Failure 1 Replace the ECU GA |
520801 | Control valve 1 power supply circuit failure 1 Replace the ECU GA |
520901 | Control valve 2 power supply circuit failure 1 Replace the ECU GA |
521149 | Internal ECU failure 1 Replace the ECU GA. |
521196 | ECU malfunction 1 Check the reliability of the connection in the power supply circuit and the ground of the ECU; if the circuits are in good condition, replace the ECU head unit. |
521255 | Lack of ESC hydraulic unit coding option 1 Enter the coding option into the ECU using a diagnostic tool. On the diagnostic device, select: Select the vehicle type - "Anti-blocking system" - "BOSCH ESP 9.0" - "4: Additional tests" - "3: Equipment" - Then select the appropriate equipment from the list provided. |
521501 | Brake light switch circuit failure 1 Check the fuse F25. Replace damaged one. 2 Check the brake light switch electrical circuit for open and short circuits. Replace damaged parts. 3 Check the functionality of the brake light switch and its correct connection. Replace it if necessary. |
521502 | Brake light switch failure 1 Check the installation of the brake light switch. 2 Check the functionality of the brake light switch and its correct connection. Replace it if necessary. |
521529 | Invalid signal from brake light switch 1 Check the installation of the brake light switch. 2 Check the functionality of the brake light switch and its correct connection. Replace it if necessary. |
521916 | The supply voltage of the electric water heater is below the operating range 1 Check the 40 A fuse. Replace if damaged. 2 Check the reliability of the connection in the power supply circuit and the ground of the EMC (contacts "1" and "13" of the ECU main unit). |
522095 | Incorrect connection of harnesses to the DSC 1 Check the correct connection of the harnesses to the DSC. |
C00187 | No signals in the bus CAN 1 Repair the break in the tire CAN to the State Automobile Inspectorate. |
C00188 | Short circuit in the bus CAN 1 Eliminate the short circuit in the bus CAN to the State Automobile Inspectorate. |
D70186 | Invalid signal transmitted on the bus CAN, from the ECU controller 1 Eliminate the break or short circuit in the bus CAN to the State Automobile Inspectorate. |
D71186 | Invalid signal transmitted on the bus CAN, from the automatic transmission controller 1 Eliminate the break or short circuit in the bus CAN to the State Automobile Inspectorate. |