Powertrain
generic / SAE
P0E3B
Hybrid/EV Battery Coolant Pump Overspeed
The HV battery coolant pump exceeds the calibrated maximum speed. Mechanical load lost or rotor offset.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberE / 3B
Possible causes
- Mechanical load lost high
- Air pocket in loop medium
- Pack cell imbalance approaching service threshold low
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 300–1800 €
- Estimated time: 2–7 h
- Component: hv battery coolant pump
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012