P0C7A code meaning
Drive Motor B Inverter Voltage Too High
Powertrain system Generic code P0Cxx codes Check engine light
What P0C7A means
P0C7A is the overvoltage code for the inverter of drive motor B, which on many all-wheel-drive hybrids is the rear motor. Mitsubishi documents it for the Outlander PHEV: in the 2018 model the rear motor control unit has a hardware high-voltage switch that closes at 420 V, a higher limit than the 370 V of the front unit, and the code sets after a single trip with the power stage active or after 0.5 s with it switched off. The manual blames the high-voltage circuit or the rear control unit and starts with the rear battery cable connections; the 2023 model keeps the code under a rear-motor overvoltage name. Regeneration spikes, contactor events and sensing errors are the usual suspects. Expect a warning lamp and reduced drive power.
P0C7A at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 6 hours
- Clears after repairAfter a drive cycle
Symptoms of P0C7A
- Hybrid or EV warning lamp
- Reduced drive power, rear axle drive may be unavailable
Common causes of P0C7A
- PossibleRear battery cable connection loose at the rear motor control unit
- PossibleRear motor control unit or its voltage detection faulty
- PossibleVoltage spike from regeneration or a contactor event
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Drive motor b inverterDc link capacitor
What each part of P0C7A means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| C | Area: hybrid propulsion. |
| 7A | The exact fault in that area. |
What to do next
- Note P0C7A and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0C7A
What does P0C7A mean?
P0C7A means "Drive Motor B Inverter Voltage Too High". P0C7A is the overvoltage code for the inverter of drive motor B, which on many all-wheel-drive hybrids is the rear motor. It is a generic code, so it means the same on every make.
Is it safe to drive with P0C7A?
Drive gently and only to a workshop. With P0C7A the car can go into limp mode (reduced power) to protect itself.
Will P0C7A fail an emissions test?
Yes, it can. P0C7A is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0C7A to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 6 hours of work. This is a job for a workshop.
Will P0C7A clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.