B1A8A on Audi
Charge Door 1 LIN Actuator - Communication / Path-of-Movement Fault
B1A8A on Audi vehicles indicates charge door 1 lin actuator - communication / path-of-movement fault. Au7o has documented this code across 1 Audi model — most commonly on e-tron. 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.
Common Causes of B1A8A
- •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- •Outdated onboard-charger software (Audi TSB 2062631)
B1A8A on Audi by Model
Audi e-tron(1 issue)
- 2019-2020 e-tron Charging Door Will Not Open: VIN and Connector Diagnosis Required2019-2020
Audi TSB 2071343/1 covers a charging door that will not open when its button is pressed on 2019 e-tron quattro and an early 2020 e-tron Sportback quattro VIN range. A crack at the charge-level-indicator connector can admit moisture, causing oxidation or a LIN communication fault between the charging-door components and high-voltage charger. The door may then open only with the manual release. Matching DTCs include B1A8FF0, B1A89F0, B1A8AF3 and B1A88F3.
Looking for B1A8A on a different make?
View B1A8A across all makes →Frequently Asked Questions
What does B1A8A mean on Audi?▼
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. On Audi specifically, this code is documented across 1 model.
What causes B1A8A on Audi vehicles?▼
Common causes on Audi: 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(Audi TSB 2071343), Mechanically stuck or iced charge flap preventing full actuator travel, Failed door actuator motor, Outdated onboard-charger software (Audi TSB 2062631). Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix B1A8A on a Audi?▼
Repair costs vary widely depending on the root cause and specific Audi model.
Which Audi models have B1A8A documented?▼
Au7o has documented B1A8A on 1 Audi model: e-tron.