B1A89 on 2019-2020 Audi e-tron — LED Module Charging Socket Door 2 - Communication Malfunction
1 vehicles · 1 makes
Most Reported On
B1A89 is an OBD-II diagnostic trouble code meaning “LED Module Charging Socket Door 2 - Communication Malfunction.” J1050 cannot communicate with the LED status/charge-level indicator module built into charging socket door 2. The charge-state light ring is the same LIN node as the door hardware, so this fault usually appears together with the charge-door actuator codes. This code is most commonly reported on 2019-2020 Audi e-tron.
Common Causes
Diagnostic Tools
B1A89 does not use the standard P/B/C/U prefix. It may be a manufacturer-specific code, so verify that a scanner supports your exact year, model and module before buying.
FAQ
What does B1A89 mean?
B1A89 stands for "LED Module Charging Socket Door 2 - Communication Malfunction." J1050 cannot communicate with the LED status/charge-level indicator module built into charging socket door 2. The charge-state light ring is the same LIN node as the door hardware, so this fault usually appears together with the charge-door actuator codes.
What are the most common causes of B1A89?
The most common causes of B1A89 are: Crack at the charge-level-indicator connector admitting moisture, creating a ground-to-LIN bypass (Audi TSB 2071343), Oxidised connector pins at the charging indicator, Failed LED indicator module, Open or shorted LIN wire in the charge-door harness. The specific cause varies by vehicle.
How much does it cost to fix B1A89?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by B1A89?
Au7o has documented B1A89 across 1 vehicle models from 1 manufacturers: Audi.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.