B1A87 on 2021 Audi e-tron — Function Button Charge Door 2 Faulty
1 vehicles · 1 makes
Most Reported On
B1A87 is an OBD-II diagnostic trouble code meaning “Function Button Charge Door 2 Faulty.” Same diagnostic as B1A86 but for the second charging door on vehicles equipped with two charge ports. J1050 has detected a faulty or implausible signal from the charge-door 2 release button and has disabled the electric flap release on that side. This code is most commonly reported on 2021 Audi e-tron.
Common Causes
Diagnostic Tools
B1A87 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 B1A87 mean?
B1A87 stands for "Function Button Charge Door 2 Faulty." Same diagnostic as B1A86 but for the second charging door on vehicles equipped with two charge ports. J1050 has detected a faulty or implausible signal from the charge-door 2 release button and has disabled the electric flap release on that side.
What are the most common causes of B1A87?
The most common causes of B1A87 are: Outdated onboard-charger software (level 0070) per Audi TSB 2061788, Failed charge-door 2 push-button switch, Moisture/corrosion at the charge-door connector, LIN bus wiring fault between charge door 2 and J1050. The specific cause varies by vehicle.
How much does it cost to fix B1A87?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by B1A87?
Au7o has documented B1A87 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.