P276AElectric/Auxiliary Transmission Fluid Pump B Motor Supply Voltage Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Can trigger limp mode
- How the car detects it
- P276A means the power feed to the motor of a second electric transmission fluid pump, labelled B, is interrupted. Such pumps keep hydraulic pressure or lubrication alive when the engine-driven pump is idle, for instance during stop-start or in a dual-clutch gearbox. No manufacturer documents P276A publicly. Audi shows what pump B is in bulletin 34-17-25 for the 2017 A4, A5, A6 and 2018 Q5 with seven-speed dual-clutch units 0CJ, 0CK and 0CL: the gear oil pump V553, which reports supply faults to the TCM under P276B00. CARB requires such actuators to be checked for open circuits. A blown fuse, a corroded pump connector or a broken supply wire are typical; with the pump dead the gearbox may restrict stop-start or limit performance.
- What you may notice
- Transmission warning lamp
- Stop-start deactivated
- Reduced performance or limp mode in some designs
- Likely causes
- LikelyBlown fuse in the pump supply
- PossibleCorroded or oil-contaminated pump connector
- PossibleBroken supply wire or relay contact
- Repair
- Medium · Usually a job for a workshop.Typical cost: €30 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.