B1A89 on Audi
LED Module Charging Socket Door 2 - Communication Malfunction
B1A89 on Audi vehicles indicates led module charging socket door 2 - communication malfunction. Au7o has documented this code across 1 Audi model — most commonly on e-tron. J1050 cannot communicate with the LED status/charge-level indicator module built into charging socket door 2. The charge-state light ring is the same LIN node as the door hardware, so this fault usually appears together with the charge-door actuator codes.
Common Causes of B1A89
- •Crack at the charge-level-indicator connector admitting moisture, creating a ground-to-LIN bypass (Audi TSB 2071343)
- •Oxidised connector pins at the charging indicator
- •Failed LED indicator module
- •Open or shorted LIN wire in the charge-door harness
B1A89 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.
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View B1A89 across all makes →Frequently Asked Questions
What does B1A89 mean on Audi?▼
B1A89 stands for "LED Module Charging Socket Door 2 - Communication Malfunction." J1050 cannot communicate with the LED status/charge-level indicator module built into charging socket door 2. The charge-state light ring is the same LIN node as the door hardware, so this fault usually appears together with the charge-door actuator codes. On Audi specifically, this code is documented across 1 model.
What causes B1A89 on Audi vehicles?▼
Common causes on Audi: Crack at the charge-level-indicator connector admitting moisture, creating a ground-to-LIN bypass (Audi TSB 2071343), Oxidised connector pins at the charging indicator, Failed LED indicator module, Open or shorted LIN wire in the charge-door harness. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix B1A89 on a Audi?▼
Repair costs vary widely depending on the root cause and specific Audi model.
Which Audi models have B1A89 documented?▼
Au7o has documented B1A89 on 1 Audi model: e-tron.