OBD-II code · Powertrain (generic)
P0CA5 Hybrid/EV Battery Discharging Voltage High
The HV battery discharging voltage exceeds the expected window. Open circuit voltage too high under load.
Is it safe to drive with P0CA5?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyState of charge near full
- PossibleRegen braking overshoot
- Less likelyPack cell imbalance approaching service threshold
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
- 3–14 h
- Emissions test
- Usually unaffected
- Parts involved
- Hv Battery, Bms
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.