B1A88 on 2019-2020 Audi e-tron — Charge Door 2 LIN Actuator - Communication Malfunction
1 vehicles · 1 makes
Most Reported On
B1A88 is an OBD-II diagnostic trouble code meaning “Charge Door 2 LIN Actuator - Communication Malfunction.” The high-voltage battery charger J1050 has lost or corrupted LIN-bus communication with the electric actuator that latches and releases charging door 2. Without valid actuator feedback the module will not command the door open. This code is most commonly reported on 2019-2020 Audi e-tron.
Common Causes
Diagnostic Tools
B1A88 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 B1A88 mean?
B1A88 stands for "Charge Door 2 LIN Actuator - Communication Malfunction." The high-voltage battery charger J1050 has lost or corrupted LIN-bus communication with the electric actuator that latches and releases charging door 2. Without valid actuator feedback the module will not command the door open.
What are the most common causes of B1A88?
The most common causes of B1A88 are: Crack in the charging-indicator connector allowing moisture in, bridging the ground pin and the LIN pin (Audi TSB 2071343 - 2019 e-tron quattro / early 2020 e-tron Sportback), Corroded contact pins in the charge-door connector, Failed charge-door actuator motor, Damaged LIN wiring in the charge-door harness. The specific cause varies by vehicle.
How much does it cost to fix B1A88?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by B1A88?
Au7o has documented B1A88 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.