B1A8F on 2019-2020 Audi e-tron — LED Module Charging Socket Door 1 - Communication Malfunction
1 vehicles · 1 makes
Most Reported On
B1A8F is an OBD-II diagnostic trouble code meaning “LED Module Charging Socket Door 1 - Communication Malfunction.” The onboard charger has lost LIN communication with the LED charge-level indicator module in charging socket door 1. This is the counterpart to B1A89 for the primary (driver-side on US cars) charge port. This code is most commonly reported on 2019-2020 Audi e-tron.
Common Causes
Diagnostic Tools
B1A8F 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 B1A8F mean?
B1A8F stands for "LED Module Charging Socket Door 1 - Communication Malfunction." The onboard charger has lost LIN communication with the LED charge-level indicator module in charging socket door 1. This is the counterpart to B1A89 for the primary (driver-side on US cars) charge port.
What are the most common causes of B1A8F?
The most common causes of B1A8F are: Cracked charge-level-indicator connector letting moisture create a ground/LIN bypass (Audi TSB 2071343), Corrosion on the indicator connector contact pins, Failed LED indicator module, Damaged LIN wiring to the charge-door assembly. The specific cause varies by vehicle.
How much does it cost to fix B1A8F?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by B1A8F?
Au7o has documented B1A8F 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.