B1A8A on 2019-2020 Audi e-tron — Charge Door 1 LIN Actuator - Communication / Path-of-Movement Fault
1 vehicles · 1 makes
Most Reported On
B1A8A is an OBD-II diagnostic trouble code meaning “Charge Door 1 LIN Actuator - Communication / Path-of-Movement Fault.” J1050 has detected either a LIN communication failure with the charging door 1 actuator, or that the actuator did not complete its expected travel (path-of-movement fault) when commanded to open or close the flap. This code is most commonly reported on 2019-2020 Audi e-tron.
Common Causes
Diagnostic Tools
B1A8A 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 B1A8A mean?
B1A8A stands for "Charge Door 1 LIN Actuator - Communication / Path-of-Movement Fault." J1050 has detected either a LIN communication failure with the charging door 1 actuator, or that the actuator did not complete its expected travel (path-of-movement fault) when commanded to open or close the flap.
What are the most common causes of B1A8A?
The most common causes of B1A8A are: Moisture ingress through a cracked charging-indicator connector bridging ground and LIN (Audi TSB 2071343), Mechanically stuck or iced charge flap preventing full actuator travel, Failed door actuator motor, Outdated onboard-charger software (Audi TSB 2062631). The specific cause varies by vehicle.
How much does it cost to fix B1A8A?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by B1A8A?
Au7o has documented B1A8A 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.