P0B0C
Electric/Auxiliary Transmission Fluid Pump A Hydraulic Leakage
The TCM detects hydraulic leakage from auxiliary transmission fluid pump A. Pump output cannot maintain pressure due to internal or external leak.
The TCM detects hydraulic leakage from auxiliary transmission fluid pump A. Pump output cannot maintain pressure due to internal or external leak.
Common causes
- high
Pump seal aged
One of the most commonly reported causes for this code — check this first.
Typical part cost: $440-2750
- medium
Internal pump wear
A plausible cause — test and verify before replacing parts.
Typical part cost: $440-2750
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P0B0C mean?
P0B0C means "Electric/Auxiliary Transmission Fluid Pump A Hydraulic Leakage". It is a generic OBD-II code that points to a fault in the hybrid / ev powertrain.
What are the most common causes of P0B0C?
pump seal aged; internal pump wear — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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