2022 Audi e-tron DTCs B2F0100, U012700 in ABS Module

Owners of 2022 Audi e-tron, e-tron GT, and RS e-tron GT models may encounter specific diagnostic trouble codes (DTCs) related to the ABS control module. Audi has issued Technical Service Bulletin (TSB) 2064758/1, dated October 11, 2021, to address these codes, including Audi e-tron DTCs B2F0100 U012700, U112200, and U112300. This TSB is identified as reference 45 21 22.

This TSB clarifies that these DTCs are logged due to the vehicle's design and do not indicate a functional problem with the ABS or ESC system. They are typically found during pre-delivery inspection (PDI) or other diagnostic work, not usually as a result of customer complaints.

Symptoms

While owners generally do not report concerns related to these DTCs, technicians may observe the following during diagnostic procedures:

• The "ABS/ESC warning lamp" may flash in the instrument cluster when a diagnostic tester is connected.
• DTCs are found in the ABS control module, J104 (address word 0003), during PDI inspection or other diagnostic work.

Fault Codes / DTCs

The following diagnostic trouble codes (DTCs) may be stored in the ABS control module (J104):

Code	Description	Symptom Codes	Status
B2F0100	Development code 1	358656, 339457	Static (358656), Intermittent (339457)
U012700	Tire Pressure Monitoring Control Module - no Communication	358656	Static
U112200	Data bus implausible message	303616	Static
U112300	Data bus error value received	169948, 303360	Intermittent (169948), Static (303360)

Important Warnings for Owners

Audi emphasizes several key points regarding these DTCs, including Audi e-tron DTCs B2F0100 U012700:

• No Functional Impact: These DTCs are logged for design reasons related to control module communication. They do not cause any issues for the customer, and the function of the ABS/ESC system is not altered or restricted.
• Static DTCs Cannot Be Erased: Diagnostic trouble codes logged as "static" (e.g., B2F0100 with symptom code 358656, U012700, U112200, and U112300 with symptom code 303360) cannot be permanently erased from the system.
• Intermittent DTCs Will Reappear: Intermittent DTCs (e.g., B2F0100 with symptom code 339457 and U112300 with symptom code 169948) can be erased. However, they will be logged again as soon as the conditions for their occurrence are met.

Service Procedure Summary

The service procedure for these vehicles is straightforward, as the DTCs do not indicate a functional fault. Technicians should perform the following steps:

1. Connect a diagnostic tool to the vehicle.
2. Erase all intermittent diagnostic trouble codes (DTCs) found in the ABS control module, J104 (address word 0003).
3. Release the vehicle to the customer.

No further action, such as part replacement or software updates, is required for these specific DTCs.

Warranty Information

For eligible vehicles, warranty claims related to this Technical Service Bulletin (TSB 2064758/1) can be submitted under the following conditions:

• Claim Type 110: Applicable for vehicles up to 48 months or 50,000 miles.
• Claim Type G10: For Certified Pre-Owned (CPO) vehicles, verification of owner eligibility is required.
• Informational Only: If the vehicle is outside of any warranty coverage, this TSB serves as informational guidance only, and any related service would not be covered.

The specific codes for warranty claims are:

• Service Number: 4530
• Damage Code: 0040
• Diagnostic Time (GFF): 0150 0000 (representing the maximum 50 Time Units stated on the diagnostic protocol).

Please note that no allowance is provided for road tests before or after the service procedure (0 TU). All warranty claims must adhere to the Audi Warranty Policies and Procedures Manual and are subject to review or audit.

Additional Information for Technicians

This TSB (2064758) and its references are subject to change. Technicians are advised to consult the latest information from their Parts Department, ETKA, and the Repair Manual for current parts bulletins and fastener requirements.

NHTSA ID: 10204758