OBD-II code · Powertrain (generic)
P0C7A Drive Motor B Inverter Voltage Too High
The drive motor B inverter DC-link voltage exceeds the protection threshold. Regenerative braking overshoot or BMS regulation fault.
Is it safe to drive with P0C7A?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyRegenerative braking overshoot
- PossibleBMS regulation outside calibration
Symptoms
- EV/hybrid system warning light on
- Reduced motor power or torque
- Possible limp mode or vehicle shutdown
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 3–12 h
- Emissions test
- Usually unaffected
- Parts involved
- Drive Motor B Inverter, Dc Link Capacitor
Related codes
- P0C79Drive Motor A Inverter Voltage Too High
- P0C77Hybrid/EV Battery System Precharge Time Too Short
- P0C78Hybrid/EV Battery System Precharge Time Too Long
- P0C7BGenerator Inverter Voltage Too High
- P0C7CHybrid/EV Battery Temperature Sensor G Circuit
- P0C7DHybrid/EV Battery Temperature Sensor G Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.