2022-2023 Audi e-tron GT ABS/ESC Warning DTCs B2F0100 U012700

Audi has issued Technical Service Bulletin (TSB) 45 22 25 2064758/2 to address specific diagnostic trouble codes (DTCs) that may be found in the ABS control module of 2022-2023 Audi e-tron GT and RS e-tron GT vehicles. This bulletin, which supersedes TSB Group 45 number 21-22 dated October 11, 2021, clarifies that these codes are often logged due to design reasons and do not indicate a functional issue with the vehicle's braking or stability systems.

This information is particularly relevant for owners of the 2022-2023 Audi e-tron GT who might encounter an Audi e-tron GT ABS/ESC warning during diagnostic checks.

Symptoms

Owners typically do not report any concerns related to this issue. Instead, the presence of these DTCs is usually discovered during pre-delivery inspection (PDI) or other diagnostic work performed by a technician. When a diagnostic tester is connected, the "ABS/ESC warning lamp" may flash in the instrument cluster.

Fault Codes / DTCs

The following diagnostic trouble codes (DTCs) may be found stored in the ABS control module, identified as J104 (address word 0003):

• DTC B2F0100 (Development code 1) with symptom codes: 358656 (static) and 339457 (intermittent).
• DTC U012700 ("Tire Pressure Monitoring Control Module - no Communication") with symptom code 358656 (static).
• DTC U112200 ("Data bus implausible message") with symptom code 303616 (static).
• DTC U112300 ("Data bus error value received") with symptom codes: 169948 (intermittent) and 303360 (static).

Technical Background

Audi states that these DTCs are logged in the ABS control module (J104) due to specific design characteristics related to control module communication. Importantly, these codes do not cause any issues for the customer, and the function of the ABS/ESC system is not altered or restricted by their presence. Therefore, an Audi e-tron GT ABS/ESC warning related to these codes does not indicate a safety concern.

Important Warnings for Owners

Owners should be aware of the following critical information regarding these DTCs:

• The static DTCs cannot be erased. These codes are permanently stored and will remain in the system.
• The intermittent DTCs can be erased but will be logged again as soon as the conditions for them occur. This means that even if cleared, these intermittent codes are likely to reappear under certain operating conditions.

Repair Procedure Summary

For vehicles exhibiting these DTCs, the recommended service procedure is straightforward. Technicians should erase all intermittent DTCs stored in the ABS control module, J104. After clearing the intermittent codes, the vehicle can be released. No further action is required as the static codes cannot be erased and the intermittent codes are expected to re-log without affecting vehicle performance or safety.

Warranty Information

This service is covered under warranty for vehicles up to 48 months or 50,000 miles. The specific warranty claim details are:

• Claim Type: 110
• Service Number: 4530
• Damage Code: 0040
• Diagnostic Time: GFF, 0150 0000
• Claim Comment: As per TSB 2064758/2

All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual.

Owner Action

If you own a 2022-2023 Audi e-tron GT or RS e-tron GT and are concerned about an Audi e-tron GT ABS/ESC warning or diagnostic trouble codes found during a service visit, you should consult an authorized Audi dealer. They can refer to Technical Service Bulletin 45 22 25 2064758/2 to understand that these specific DTCs do not indicate a functional problem and can perform the necessary procedure to clear intermittent codes.

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Source: NHTSA ID: 10212112