P0CF0
Hybrid/EV Electronics Coolant Temperature Sensor A Circuit Low
The ECM detects a low fault on the hybrid/ev electronics coolant temperature sensor a circuit. Reading cannot be used reliably for control.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: easy
Common causes
Ordered by how often each turns out to be the cause.
- Signal wire shorted to groundCommon
- Internal sensor shortPossible
- Connector pins corroded - high contact resistanceLess likely
Parts involved
- Hybrid Electronics Coolant Temp Sensor A
- Wiring Harness
- Hybrid Control Module
P0CF0 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.