Powertrain
generic / SAE
P0E12
Hybrid/EV Battery Pack Coolant Heater A Control Circuit/Open
The HV battery pack coolant heater A reports a control circuit/open condition. Battery preheating may be impaired in cold weather.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberE / 12
Possible causes
- Open in heater control wire high
- Open heater element medium
- Pin pushed back out of connector body 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: medium
- DIY: shop recommended
- Estimated cost: 200–1500 €
- Estimated time: 1–5 h
- Component: hv battery pack coolant heater a
- Component: wiring harness
- Component: bms
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012