P0B0CElectric/Auxiliary Transmission Fluid Pump A Hydraulic Leakage
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Can trigger limp mode
- How the car detects it
- P0B0C says the circuit fed by auxiliary pump A loses pressure through a leak, so the pump cannot hold the demanded pressure. Stellantis documents it as P0B0C 7A for the 2023-26 Jeep Avenger and 2026 Compass with hybrid dual-clutch transmission outside the US (TSB 21-061-26): an internal leak at the parking pawl locking piston causes jerking and power loss and may stop the engine from restarting after a stop; with P07E4 or P07E6 present and more than 5 km on the clock, the piston or the transmission is replaced. How a controller can see a leak shows a Nidec patent: after a speed change the pump current keeps falling instead of recovering, and the pump is stopped. P0B0B and P0B09 cover the supply, P2797 a pump that does not deliver.
- What you may notice
- Jerking and loss of power while driving
- Engine fails to restart after a stop
- Transmission warning, possibly with P07E4 or P07E6
- Likely causes
- LikelyInternal leak at the parking pawl locking piston (Jeep Avenger/Compass hybrid DCT)
- PossibleWorn seal or valve leaking inside the hydraulic circuit
- PossibleExternal leak and low transmission fluid level
- RareInternal wear of the auxiliary pump
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €300 – €6,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.