2022 Audi A3 S3 Rearview Camera DTC U164300

Symptoms

Owners of 2022 Audi A3 and S3 models may find the Diagnostic Trouble Code (DTC) Audi S3 U164300 logged in their vehicle's diagnostic system. This specific code, U164300, is typically recorded in the data bus diagnostic interface -J533- (diagnostic address 0019). This can occur during routine service procedures such as pre-delivery inspection (PDI), maintenance, or after a terminal 30 reset.

Despite the presence of this fault code, the rearview camera system (RVC) usually functions without any issues. There are typically no visible warning messages in the instrument cluster, and other electrical vehicle systems remain unrestricted. The primary symptom is the presence of the code itself, not a functional failure or any adverse impact on the vehicle's operation.

Fault Codes / DTCs

The following Diagnostic Trouble Code (DTC) is associated with this issue:

Code	Description	Module
U164300	Ethernet Rearview Camera System Control Module no communication	Data bus diagnostic interface -J533-

This DTC is accompanied by symptom number 2494569, indicating a communication issue with the rearview camera system control module.

Technical Background

The root cause of the Audi S3 U164300 DTC is identified as a communication deviation within the reversing camera control unit J772 (diagnostic address 006C). This deviation causes the data bus diagnostic interface -J533- to log a 'no communication' fault. However, this is a diagnostic anomaly rather than a functional defect, meaning the physical connection and operation of the rearview camera are typically normal despite the logged code.

Important Warnings for Owners

Audi Technical Service Bulletin 91 22 69 2065763/1 explicitly states several critical warnings for both technicians and owners:

• This DTC does not lead to a restricted function or a message in the instrument cluster. The rearview camera will continue to operate normally, and this DTC should not be considered a problem.
• If there are no customer concerns and the RVC system operates normally, this fault should be ignored.
• If there is a customer concern for a RVC function, this DTC should only be considered a last resort in diagnosis. In this case, another root cause is likely, and normal diagnostic procedures should be continued.
• Replacing the reversing camera -J772- or the data bus diagnostic interface -J533- will NOT clear this DTC, even if recommended by Guided Fault Finding. This means that attempting to replace these components is an unnecessary expense and will not resolve the underlying diagnostic code.

Service Advice

For 2022 Audi A3 and S3 vehicles, if the rearview camera is functioning correctly and there are no operational concerns, the presence of DTC U164300 should be disregarded. This code is considered a false positive in such scenarios. If, however, there is an actual functional issue with the rearview camera, the Audi S3 U164300 code should be treated as a secondary diagnostic indicator, and technicians should investigate other potential causes for the malfunction.

Warranty Information

This Technical Service Bulletin (TSB) is informational only. It is not applicable to any Audi Warranty claims, meaning any diagnostic or repair work performed based solely on this DTC without an actual functional issue would not typically be covered under warranty.

Required Parts and Tools

No specific parts or special tools are required for this informational TSB, as it primarily advises on how to interpret the U164300 DTC rather than providing a repair procedure.

NHTSA ID: 10212720