U019BLost Communication With Battery Charger Control Module A
- Generic OBD-II code · Network
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- U019B means battery charger control module A, the on-board charger of a plug-in vehicle, is no longer heard on the bus. Ford's 2014 OBD code list flags U019B as MIL-relevant, in line with CARB's rule that plug-in hybrids must detect charger faults that stop or slow charging. Audi bulletin 93 23 96 (A7 e quattro 2021-2022) finds U019B00 in hybrid manager J840 with a no-start and a charge plug shown as locked, caused by damaged wires at couplings T6bl and T8bd. On the 2025 e-tron GT the gateway logs it with a yellow electrical fault while a software fix is pending. Ford SSM 52527/52831 (F-150 Lightning 2022-2023) pair it with U0293 and a dead intelligent backup power feature, due to gateway software. U01BB and U027A cover chargers B and C.
- What you may notice
- Vehicle does not charge or charge plug stays locked
- Electrical system warning, drive system cannot be activated
- Export power or backup power features unavailable
- Likely causes
- LikelyDamaged wires at harness couplings exposed to the environment (Audi A7 PHEV)
- PossibleGateway or controller software (Ford Lightning, Audi e-tron GT)
- PossibleCharger without 12 V supply, ground or wake-up signal
- RareOn-board charger control electronics faulty
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €0 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.