P0C1B
Electric/Auxiliary Transmission Fluid Pump Control Module Internal Temperature Too High
The auxiliary transmission fluid pump control module reports internal temperature above the protection threshold.
The auxiliary transmission fluid pump control module reports internal temperature above the protection threshold.
Common causes
- high
Sustained pump load
One of the most commonly reported causes for this code — check this first.
Typical part cost: $440-2750
- medium
Ambient temperature too high
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 P0C1B mean?
P0C1B means "Electric/Auxiliary Transmission Fluid Pump Control Module Internal Temperature Too High". It is a generic OBD-II code that points to a fault in the hybrid / ev powertrain.
What are the most common causes of P0C1B?
sustained pump load; ambient temperature too high — 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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