2022-2025 Audi: J775 Suspension Control Unit DTCs B200FF0-B200FF5

This Technical Service Bulletin (TSB) 2067531/5, revision 5, issued on November 20, 2024, addresses specific diagnostic trouble codes (DTCs) related to the J775 suspension control unit in various 2022-2025 Audi models. This bulletin supersedes TSB Group 43 number 24-92 dated July 11, 2024, due to revised conditions and updated workshop findings.

Symptoms

Owners of affected Audi vehicles may observe warning messages displayed in the instrument cluster. These messages typically indicate a problem with the vehicle's suspension system. The specific messages reported are "Air suspension: system fault" or "Shock absorber system/suspension". If you see an Audi e-tron suspension fault message, this TSB may apply.

Fault Codes / DTCs

When these symptoms occur, one or more of the following diagnostic trouble codes (DTCs) may be stored as static faults in the J775 suspension control unit (diagnostic address 0074):

• B200FF0: Internal malfunction.
• B200FF1: Internal malfunction.
• B200FF2: Internal malfunction.
• B200FF3: Internal malfunction.
• B200FF4: Internal malfunction.
• B200FF5: Internal malfunction.

Diagnosis / Trigger Conditions

These DTCs are logged as static faults within the J775 suspension control unit, indicating an internal malfunction. Before proceeding with the repair outlined in TSB 2067531/5, technicians are instructed to first check for the applicability of other related Technical Service Bulletins:

• TSB 2073034: 43 Air suspension system fault - DTC C118D01 Compressor for level control electrical error
• TSB 2073601: 57 Safe CP in Cluster w/ DTC U110100; C115E54, U111800

Important Warnings

If, after attempting to clear the DTCs, they remain logged as static faults, technicians are advised to perform a virtual replacement of the J775 control unit (diagnostic address 0074). It is crucial to note that this procedure involves simulating a replacement without actually installing a new physical control unit. Failure to follow this instruction could lead to unnecessary parts replacement.

Repair Procedure Summary

If one or more of the DTCs B200FF0 through B200FF5 are stored in the J775 suspension control unit, the following steps should be performed:

1. Unplug the Diagnostic Connector: Disconnect the diagnostic tool from the vehicle.
2. Switch Off Ignition: Turn off the vehicle's ignition.
3. Lock the Vehicle: Ensure all doors, the hood, and the rear lid are closed and locked.
4. Wait for Bus Sleep Mode: Allow sufficient time for the vehicle to enter its bus sleep mode.
5. Unlock the Vehicle: Unlock the vehicle.
6. Plug in Diagnostic Connector: Reconnect the diagnostic tool to the vehicle.
7. Switch On Ignition: Turn the vehicle's ignition back on.
8. Attempt to Erase DTCs: Use the diagnostic tool to try and clear the stored DTCs.

If, after these steps, the DTCs are still logged as static, a virtual replacement of the J775 control unit must be performed. If the DTCs persist even after the virtual replacement, further instructions from the Guided Fault Finding (GFF) system should be followed.

Warranty Information

Warranty claims related to this issue should be submitted in accordance with the Audi Warranty Policies and Procedures Manual. The following details apply:

• Service Number: 4316
• Damage Code: 0040
• Labor Operations:
  • Check vehicle (initiate bus sleep mode): 0689 0199 (20 Time Units)
  • GFF: 0150 0000 (Time stated on diagnostic protocol)
  • Charge battery: 2706 8950 (See SRT with associated operations)
• Claim Comment: As per TSB 2067531/5

Source: NHTSA ID 11011256