Table 3
Code | Description and diagnostics |
401001 | Failure in the front left EMC intake circuit 1 Replace GA ABS |
401101 | Failure in the front left EMC exhaust circuit 1 Replace GA ABS |
401401 | Failure in the front right EMC intake circuit 1 Replace GA ABS |
401501 | Failure in the front right EMC exhaust circuit 1 Replace GA ABS |
401801 | Failure in the intake rear left EMC circuit 1 Replace GA ABS |
401901 | Failure in the rear left EMC exhaust circuit 1 Replace GA ABS |
401C01 | Failure in the intake circuit of the rear right EMC 1 Replace GA ABS |
401D01 | Failure in the rear right EMC exhaust circuit 1 Replace GA ABS |
402049 | Internal malfunction of the EWH 1 Replace GA ABS |
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 ABS GA. |
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 ABS GA. |
40314A | Incorrect type of front left DSC 1 Check the marking of the installed DSC. If not, replace with the required one. |
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, 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 ABS GA. |
Code | Description and diagnostics |
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 ABS GA. |
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 ABS GA. |
40344A | Incorrect type of front right DSC 1 Check the marking of the installed DSC. If not, replace with the required one. |
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 ABS GA. |
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 ABS GA. |
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 ABS GA. |
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. 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. If necessary |
Code | Description and diagnostics |
tighten the bridges. 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 ABS GA. | |
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 ABS GA. |
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 ABS GA. |
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 ABS GA. |
403B29 | Invalid speed signal 1 Check that the tire and wheel sizes correspond to those specified in the operating manual. In case of discrepancy, replace. 2 Check electrical circuits for breaks. Replace damaged parts. 3 Check the cleanliness of the rotors. If contaminated, clean. |
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. |
407841 | Absence in EEPROM data on the wheel circumference 1 Enter the wheel circumference into the ABS ECU using a diagnostic tool. On the diagnostic device, select: Select the vehicle type - "Anti-blocking system" - "BOSCH ABS 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 GA ABS |
520016 | Low supply voltage of ABS GA 1 Check the corresponding fuse. Replace the damaged one. 2 Check the generator's functionality. 3 Check the connection of the ABS system to ground. |
Code | Description and diagnostics |
4 Check the battery condition. Charge the battery if necessary. | |
520017 | High voltage supply of the ABS GA 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 ABS system 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 ABS main engine). |
521149 | Internal ECU failure 1 Replace the ABS GA. |
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. |
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 ABS main unit). |
C00187 | Tire damage CAN 1 Repair the break in the tire CAN to GA ABS. |
C00188 | Bus short circuit CAN 1 Eliminate the short circuit in the bus CAN to GA ABS. |