OBD-II code · Powertrain (generic)
P0E1C Hybrid/EV Battery Pack Coolant Pump B Control Circuit High
The HV battery pack coolant pump B reports a control circuit high condition. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P0E1C?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyWire shorted to B+
- PossibleOpen motor
- Less likelyConnector pins corroded - high contact resistance
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
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–7 h
- Emissions test
- Usually unaffected
- Parts involved
- Hv Battery Pack Coolant Pump B, Wiring Harness, Bms
Related codes
- P0C49Hybrid/EV Battery Pack Coolant Pump A Control Circuit High
- P0E19Hybrid/EV Battery Pack Coolant Heater B Control Performance
- P0E1AHybrid/EV Battery Pack Coolant Pump B Control Circuit/Open
- P0E1BHybrid/EV Battery Pack Coolant Pump B Control Circuit Low
- P0E1DHybrid/EV Battery Pack Coolant Pump B Control Performance
- P0E1EHybrid/EV Battery Pack Coolant Pump B Control Circuit Driver Current/Temperature Too High
- P0E1FHybrid/EV Battery Pack Coolant Pump A Control Circuit Driver Current/Temperature Too High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.