OBD-II code · Powertrain (generic, extended)
P276A Electric/Auxiliary Transmission Fluid Pump B Motor Supply Voltage Circuit / Open
The motor supply line of the second electric or auxiliary transmission fluid pump is open. Pump cannot run, hydraulic pressure is lost during stop-start engine-off events.
Is it safe to drive with P276A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyBlown fuse on supply line
- PossibleBroken supply wire
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.8–3.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Aux Trans Pump B, Supply Circuit, Wiring Harness
Related codes
- P2767Input/Turbine Shaft Speed Sensor B Circuit No Signal
- P2768Input/Turbine Shaft Speed Sensor B Circuit Intermittent
- P2769Torque Converter Clutch Solenoid Circuit Low
- P276BElectric/Auxiliary Transmission Fluid Pump B Motor Supply Voltage Circuit Low
- P276CElectric/Auxiliary Transmission Fluid Pump B Motor Supply Voltage Circuit High
- P276DElectric/Auxiliary Transmission Fluid Pump B Motor Current
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.