P0CF2
Hybrid/EV Electronics Coolant Temperature Sensor A Circuit Intermittent/Erratic
The ECM detects a intermittent/erratic 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.
- Sensor connector not seatedCommon
- Noisy ground referencePossible
- Connector with intermittent contact under vibrationLess likely
Parts involved
- Hybrid Electronics Coolant Temp Sensor A
- Wiring Harness
- Hybrid Control Module
P0CF2 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.