2019-2021 Audi Models DTC U110100 in Driver Assistance Module

Symptoms

Owners of affected 2019-2021 Audi vehicles, including the Audi e-tron, will not experience any noticeable symptoms related to DTC U110100. This diagnostic trouble code is not customer-facing and does not cause any functional issues with the vehicle's driver assistance systems. It is typically discovered by technicians during pre-delivery inspection (PDI) or other diagnostic work, rather than being reported by a customer. The vehicle's functionality remains unaffected, and no warning messages are displayed to the driver.

Fault Codes / DTCs

This Technical Service Bulletin (TSB) specifically addresses the following diagnostic trouble code:

• DTC U110100: This code is described as "Component protection active" and is associated with symptom code 15361024.

This code is stored statically in the driver assistance systems control module, identified as J1121 (address word 00A5). It is important to note that this DTC is considered a "Ghost DTC" because it does not reflect an actual malfunction.

Technical Background

The presence of DTC U110100 in the driver assistance systems control module, J1121 (address word 00A5), is identified as a diagnosis issue. This means the code is stored erroneously by the system itself, rather than indicating a genuine problem with the component or its functionality. There is no underlying hardware or software defect that causes a functional impairment to the driver assistance systems.

Diagnosis / Trigger Conditions

The Audi e-tron DTC U110100 is classified as an erroneous or "Ghost DTC" because it appears without an actual malfunction. This condition is specifically observed in vehicles where the J1121 driver assistance systems control module has been updated to software version SW 0365. For vehicles that were delivered from the factory with software version SW 0365 or newer, technicians are instructed to follow the ODIS test plan for diagnosis. The presence of this Audi e-tron DTC U110100 does not imply a fault requiring repair.

Important Warnings for Owners

Audi has issued clear instructions regarding this DTC to prevent unnecessary repairs and costs:

• "Do not perform any repairs. Any repairs or part replacements for this concern may be denied."
• "This condition is normal."
• "This DTC neither causes any problems with the functionality of the vehicle nor any warning messages visible to the customer."

These warnings emphasize that the presence of the Audi e-tron DTC U110100 does not require any action or repair. Owners should not be concerned about this code appearing during diagnostic checks, as it does not affect the vehicle's operation, safety, or display any alerts.

Repair Procedure Summary

There is no repair procedure required for the Audi e-tron DTC U110100. The Technical Service Bulletin explicitly states that this condition is normal and does not warrant any repairs or part replacements. Attempting to fix this "Ghost DTC" would be unnecessary, as it does not indicate a functional problem. Furthermore, any repairs or part replacements initiated for this specific concern may be denied under warranty, as per Audi's guidelines. The production solution for this issue is noted as "Not applicable," reinforcing that no corrective action is needed.

Warranty Information

This Technical Service Bulletin (TSB 90 21 95 2062601/1) is provided for informational purposes only. It is not applicable to any Audi Warranty. Since no repair is necessary and the DTC does not indicate a defect, there are no warranty claims or service actions associated with this particular issue. Owners will not incur costs for this "ghost DTC" as no service is required.

Additional Information

All part and service references mentioned in this TSB (2062601) are subject to change and/or removal. Technicians are advised to always check with their Parts Department and/or ETKA for the latest information and parts bulletins. Additionally, the Repair Manual should be consulted for fasteners, bolts, nuts, and screws that may require replacement during any actual repair procedures, though none are indicated for this specific DTC.

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NHTSA ID Number: 10188601