Powertrain
generic / SAE
P0AA1
Hybrid Battery Positive Contactor Circuit
BMS detects an electrical fault in the positive HV contactor coil circuit. The contactor connects the battery positive terminal to the high-voltage bus.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberA / A1
Possible causes
- Contactor coil open high
- Wiring fault medium
Inspection / repair
- Difficulty: shop only
- DIY: shop recommended
- Estimated cost: 500–2500 €
- Estimated time: 2–8 h
- Component: hv contactor positive
- Component: bms
- Component: wiring harness
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012