OBD-II code · Powertrain (generic)
P0AE0 Hybrid/EV Battery Negative Contactor Control Circuit High
The control circuit of the HV battery negative contactor reports a control circuit high condition. HV main switching cannot be commanded reliably.
Is it safe to drive with P0AE0?
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 Neg Contactor, Wiring Harness, Bms
Related codes
- P0ADDHybrid/EV Battery Negative Contactor Control Circuit/Open
- P0ADEHybrid/EV Battery Negative Contactor Control Circuit Range/Performance
- P0ADFHybrid/EV Battery Negative Contactor Control Circuit Low
- P0AE1Hybrid/EV Battery Precharge Contactor Circuit
- P0AE2Hybrid/EV Battery Precharge Contactor Circuit Stuck Closed
- P0AE3Hybrid/EV Battery Precharge Contactor Circuit Stuck Open
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.