2021-2023 Audi e-tron U12B800 Suspension DTC

Audi has issued Technical Service Bulletin (TSB) 2058686/3 to address specific Diagnostic Trouble Codes (DTCs) that may be found in the suspension control module of 2021-2023 Audi e-tron vehicles. This bulletin supersedes an earlier TSB, 21-52, dated August 2, 2021, providing updated guidance for technicians.

Symptoms

Owners of affected Audi e-tron vehicles typically do not experience any noticeable symptoms or driving concerns related to this issue. The presence of the DTCs, specifically the Audi e-tron U12B800 fault, is usually discovered during pre-delivery inspection (PDI) or other diagnostic work performed by a workshop.

Fault Codes / DTCs

The following Diagnostic Trouble Codes (DTCs) may be stored in the suspension control module, identified as J775 (address word 0074):

Important Warnings

Audi's TSB provides crucial guidance for technicians regarding these specific DTCs. If only DTC U12B800 or P000000 is stored in the suspension control module, and no other DTCs are present in other control modules, then do not repair or replace any components. These DTCs do not affect the system's characteristics or vehicle performance. The recommended action is simply to clear the DTC and release the vehicle.

If, however, additional DTCs are found in the suspension control module alongside the Audi e-tron U12B800 or P000000 codes, technicians must follow the standard test plan to resolve those additional issues.

Diagnosis / Trigger Conditions

The presence of DTC U12B800 or P000000 is typically identified during routine diagnostic scans. It does not stem from a customer complaint but rather from a system check. The TSB clarifies that these codes, when isolated, do not signify an actual malfunction requiring parts replacement or complex repair procedures.

Repair Procedure Summary

For 2021-2023 Audi e-tron models exhibiting only the U12B800 or P000000 DTCs in the suspension control module (J775) and no other related fault codes, the repair procedure is straightforward:

1. Connect a diagnostic tool to the vehicle.
2. Clear the stored DTCs from the suspension control module.
3. Release the vehicle to the customer.

No parts replacement or extensive troubleshooting is required for these specific codes under these conditions.

Warranty Information

This service is covered under Audi's warranty policies. For eligible vehicles, claims can be submitted under claim type 110 for up to 48 months or 50,000 miles. For Audi Certified Pre-Owned (CPO) vehicles, claim type G10 applies, subject to owner verification. The service number for this bulletin is 4316, with a damage code of 0040. Diagnostic time is allocated as GFF 0150 0000, with a maximum of 20 TU (Technical Units).

NHTSA ID: 10214465