OBD-II code · Powertrain (generic)
P0CE4 Hybrid/EV Battery Pack Coolant Control Valve Position Sensor Circuit
The ECM detects a circuit fault on the hybrid/ev battery pack coolant control valve position sensor circuit. Reading cannot be used reliably for control.
Is it safe to drive with P0CE4?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySensor failed
- PossibleWiring or connector fault
- Less likelyPack cell imbalance approaching service threshold
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Hv Battery Pack Coolant Valve Position Sensor, Wiring Harness, Bms
Related codes
- P0CE1Hybrid/EV Battery Pack Coolant Control Valve A Stuck On
- P0CE2Hybrid/EV Battery Pack Coolant Control Valve A Control Circuit Low
- P0CE3Hybrid/EV Battery Pack Coolant Control Valve A Control Circuit High
- P0CE5Hybrid/EV Battery Pack Coolant Control Valve Position Sensor Circuit Range/Performance
- P0CE6Hybrid/EV Battery Pack Coolant Control Valve Position Sensor Circuit Low
- P0CE7Hybrid/EV Battery Pack Coolant Control Valve Position Sensor Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.