P0CEF
Hybrid/EV Electronics Coolant Temperature Sensor A Circuit Range/Performance
The ECM detects a range/performance fault on the hybrid/ev electronics coolant temperature sensor a circuit. Reading cannot be used reliably for control.
The ECM detects a range/performance fault on the hybrid/ev electronics coolant temperature sensor a circuit. Reading cannot be used reliably for control.
Common causes
- high
Sensor characteristic drifted
One of the most commonly reported causes for this code — check this first.
Typical part cost: $130-660
- medium
Sensor mounting displaced
A plausible cause — test and verify before replacing parts.
Typical part cost: $130-660
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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 P0CEF mean?
P0CEF means "Hybrid/EV Electronics Coolant Temperature Sensor A Circuit Range/Performance". It is a generic OBD-II code that points to a fault in the hybrid / ev powertrain.
What are the most common causes of P0CEF?
sensor characteristic drifted; sensor mounting displaced; sensor element aged beyond calibration window — 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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