OBD-II code · Powertrain (generic)
P0E1A Hybrid/EV Battery Pack Coolant Pump B Control Circuit/Open
The HV battery pack coolant pump B reports a control circuit/open condition.
Is it safe to drive with P0E1A?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyOpen in pump control wire
- PossibleOpen pump motor
- Less likelyPin pushed back out of connector body
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
- P0C47Hybrid/EV Battery Pack Coolant Pump A Control Circuit/Open
- P0E17Hybrid/EV Battery Pack Coolant Heater B Control Circuit Low
- P0E18Hybrid/EV Battery Pack Coolant Heater B Control Circuit High
- P0E19Hybrid/EV Battery Pack Coolant Heater B Control Performance
- P0E1BHybrid/EV Battery Pack Coolant Pump B Control Circuit Low
- P0E1CHybrid/EV Battery Pack Coolant Pump B Control Circuit High
- P0E1DHybrid/EV Battery Pack Coolant Pump B Control Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.