OBD-II code · Powertrain (generic)
P0AE7 Hybrid/EV Battery Precharge Contactor A Control Circuit High
The control circuit of the HV battery precharge contactor A reports a control circuit high condition. Precharge sequence cannot be commanded reliably.
Is it safe to drive with P0AE7?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyControl wire shorted to B+
- PossibleOpen contactor coil
- 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
- 2–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Hv Battery Precharge Contactor A, Wiring Harness, Bms
Related codes
- P0AE4Hybrid/EV Battery Precharge Contactor A Control Circuit/Open
- P0AE5Hybrid/EV Battery Precharge Contactor A Control Circuit Range/Performance
- P0AE6Hybrid/EV Battery Precharge Contactor A Control Circuit Low
- P0AE8Hybrid/EV Battery Temperature Sensor D Circuit
- P0AE9Hybrid/EV Battery Temperature Sensor D Circuit Range/Performance
- P0AEAHybrid/EV Battery Temperature Sensor D Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.