Powertrain
generic / SAE
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.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberC / 7A
Possible causes
- Regenerative braking overshoot high
- BMS regulation outside calibration medium
Symptoms
- EV/hybrid system warning light on
- Reduced motor power or torque
- Possible limp mode or vehicle shutdown
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 600–4000 €
- Estimated time: 3–12 h
- Component: drive motor b inverter
- Component: dc link capacitor
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012