2021-2022 Audi MIB3 Ghost DTCs U156C00 B1A06F1 B1A06F2
Audi has issued TSB 91 21 62 2061934/1 to address diagnostic trouble codes U156C00, B1A06F1, and B1A06F2 found in 2021-2022 MIB3-equipped vehicles. These codes are "ghost DTCs" and do not indicate an actual problem, requiring no repair.
Sarah Mitchell2022 Audi e-tron
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Audi has released Technical Service Bulletin (TSB) 91 21 62 2061934/1 concerning specific diagnostic trouble codes (DTCs) that may appear in the information electronics control module 1 (J794) of certain 2021-2022 Audi vehicles equipped with the MIB3 system. This TSB clarifies that these are
Frequently Asked Questions
- What are "ghost DTCs" like U156C00, B1A06F1, and B1A06F2?
- Ghost DTCs are diagnostic trouble codes that are erroneously stored in a vehicle's control module without indicating an actual fault or problem. They do not represent a real malfunction.
- Should I be concerned if my Audi technician finds DTC U156C00?
- No, according to Audi TSB 91 21 62 2061934/1, DTC U156C00 and related codes (B1A06F1, B1A06F2) are ghost DTCs. They should be ignored, and no repair actions are necessary.
- What should I do if my Audi has these MIB3 ghost DTCs?
- You do not need to take any action. Audi advises technicians to ignore these codes and not to perform any repairs or run test plans for them, as they are not indicative of a genuine issue. Repairs for these specific Audi MIB3 ghost DTCs may be denied under warranty.
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