2021-2025 Audi J775 Suspension DTCs B200FF0-B200FF5

Audi has released Technical Service Bulletin (TSB) 43 24 92 2067531/4 to address specific diagnostic trouble codes (DTCs) related to the J775 suspension control unit. This TSB, issued on July 11, 2024, supersedes previous bulletin 24-81 dated February 9, 2024. The issue primarily affects various 2021-2025 Audi models, where internal malfunctions within the J775 suspension control unit can lead to warning messages and stored fault codes.

This bulletin provides a diagnostic and repair procedure for the Audi J775 suspension fault, aiming to resolve the issue without unnecessary component replacement.

Symptoms

Owners of affected Audi vehicles may notice warning messages displayed in the instrument cluster. These messages indicate a problem with the vehicle's suspension system. The verbatim messages reported are:

• "Air suspension: system fault"
• "Shock absorber system/suspension"

These warnings are typically accompanied by specific diagnostic trouble codes stored in the J775 suspension control unit.

Fault Codes / DTCs

When diagnosing the Audi J775 suspension fault, technicians may find one or more of the following DTCs logged as static in the J775 suspension control unit (diagnostic address 0074):

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

Diagnosis / Trigger Conditions

Before proceeding with the primary repair steps for the Audi J775 suspension fault, technicians are instructed to first check for the applicability of other related TSBs. These include TSB 2073034 (43 Air suspension system fault - DTC C118D01 Compressor for level control electrical error) and TSB 2073601 (57 Safe CP in Cluster w/ DTC U110100; C115E54, U111800). The DTCs mentioned in this bulletin are typically logged as static, indicating a persistent issue.

Repair Procedure Summary

The repair procedure for the Audi J775 suspension fault involves a specific sequence of steps to attempt to clear the internal malfunction DTCs. If one or more of the B200FFx DTCs are stored in the J775 suspension control unit (diagnostic address 0074), the following steps should be performed:

1. Unplug the diagnostic connector from the vehicle.
2. Switch off the ignition.
3. Lock the vehicle, ensuring doors, hood, and rear lid are closed.
4. Wait until the vehicle has entered bus sleep mode.
5. Unlock the vehicle.
6. Plug the diagnostic connector back into the vehicle.
7. Switch on the ignition.
8. Attempt to erase the DTCs.

If the DTCs are still logged as static after this procedure, a virtual replacement of the J775 suspension control unit (diagnostic address 0074) should be performed. It is important to note that this is a virtual replacement, meaning the physical control unit is not actually replaced. If the DTCs remain static even after the virtual replacement, further instructions provided in the Guided Fault Finding (GFF) system should be followed.

Warranty Information

This repair for the Audi J775 suspension fault may be covered under warranty, depending on the vehicle's status. Applicable claim types include:

• 110: For vehicles up to 48 months or 50,000 miles.
• G10: For Audi Certified Pre-Owned (CPO) vehicles, requiring owner verification.

If the vehicle is outside of any applicable warranty, this Technical Service Bulletin is for informational purposes only. The service number for this issue is 4316, and the damage code is 0040. Labor operations include 0689 0199 for checking the vehicle and initiating bus sleep mode (20 Technical Units), 0150 0000 for diagnostic time as per the diagnostic protocol, and 2706 8950 for charging the battery (refer to SRT). Road tests before and after the service procedure have no allowance for labor time (0 TU). The claim comment should reference TSB 2067531/4.

All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual and are subject to review by Audi Warranty.

Important Warnings

• If the DTCs in question are still logged as static after the initial steps, perform a virtual replacement of the J775 suspension control unit (diagnostic address 0074), without actually replacing the control unit.
• If the DTCs are still logged as static even after the virtual replacement, follow the instructions provided in the Guided Fault Finding (GFF) system.

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NHTSA ID: 11005890