2021-2022 Audi Parking Aid Malfunction DTC B107A16

Symptoms of Parking Aid Malfunction

Owners of affected Audi vehicles may experience specific issues related to their parking aid system. The primary symptom is that the vehicle's acoustical and optical parking aid system becomes inoperative. This means the system designed to assist with parking, including audible alerts and visual displays, will not function as expected.

In addition to the system being inoperative, drivers will see a specific warning message displayed in the instrument cluster. This message will state, verbatim, "Parking Aid: Malfunction!".

Fault Codes / DTCs

When the parking aid system malfunctions, a specific diagnostic trouble code (DTC) is stored in the vehicle's driver assistance systems control module, identified as J1121 (address word 00A5). This code helps technicians identify the root cause of the problem.

| Code | Description | Module | | :--- | :---------- | | B107A16 | Supply voltage for park assist sensor Voltage too low (Symptom code 233474) | J1121 (Driver Assistance Systems Control Module) |

Diagnosis and Trigger Conditions

According to Audi, the presence of DTC B107A16 and the "Parking Aid: Malfunction!" message is caused by a software malfunction. This software error can lead to the diagnostic trouble code being stored erroneously, indicating a voltage issue that may not be a hardware fault. The issue affects vehicles equipped with ZFAS (Zentrales Fahrerassistenzsystem) equipment.

Important Warnings for Owners

Audi has issued specific guidance for this particular issue. It is crucial for owners to understand that no repairs are necessary at this point, and attempting to replace components will not resolve the underlying problem. The manufacturer explicitly states: "Do not replace any components for this condition since this will not resolve the customer's concern."

Audi anticipates a software solution to be available in the first quarter of 2022. Until then, the issue is recognized as a software-related problem rather than a hardware failure requiring parts replacement.

Owner Action and What to Expect

If your 2021-2022 Audi is experiencing an inoperative parking aid system and displaying the "Parking Aid: Malfunction!" message with DTC B107A16, you should contact your authorized Audi dealer. While immediate repairs are not recommended, the dealer can clear the vehicle's DTCs and document the concern.

Your dealer will explain that a solution is forthcoming. You should not expect any component replacements for this condition. The issue is covered under warranty for up to 48 months or 50,000 miles, whichever comes first. For Certified Pre-Owned (CPO) vehicles, it falls under the G10 claim type. If your vehicle is outside of warranty, this Technical Service Bulletin (TSB) serves as informational guidance.

Warranty Information

Warranty claims related to this issue are processed under specific guidelines. The claim type is typically 110 for vehicles within the standard warranty period (up to 48 Months/50,000 Miles) or G10 for CPO Covered Vehicles. If the vehicle is outside of warranty, the TSB is for informational purposes only. The service number is 9093, and the damage code is 0039. Diagnostic time is set at GFF 0151 0000, with a maximum of 25 Technical Units (TU). No allowance is provided for road tests before or after the service procedure.

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Source: NHTSA ID: 10203163