P0C0D code meaning
Drive Motor A Inverter Power Supply Circuit High
Powertrain system Generic code P0Cxx codes Check engine light
What P0C0D means
P0C0D reports that the supply of the motor A inverter is above its permitted range, while P0C0B stands for a lost or open supply and P0C0C for a supply that is too low. No manufacturer documents this code publicly. GM's tables for the sibling P0C0B show what the supply is: the gate-drive rails of the IGBT module, on eAssist a 5 V and a 15 V rail that are each watched against limits. A rail running too high stresses the driver stage and can falsify the switching of the power transistors. CARB requires hybrid components to be monitored for circuit faults. Expect the inverter to shut down or derate, with reduced or no electric drive.
P0C0D at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 6 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0C0D
- Malfunction indicator lamp, hybrid system warning
- Reduced or no electric propulsion from motor A
- Engine runs more often or the vehicle enters limp mode
Common causes of P0C0D
- Most likelyFaulty voltage regulation of the gate-drive supply inside the motor A inverter
- PossibleExcessive 12 V system voltage from the DC/DC converter or a charger
- Less likelySupply or sense line shorted to a higher voltage in the harness
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Drive motor a inverterWiring harnessHybrid control module
What each part of P0C0D 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. |
| 0D | The exact fault in that area. |
What to do next
- Note P0C0D 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 P0C0D
What does P0C0D mean?
P0C0D means "Drive Motor A Inverter Power Supply Circuit High". P0C0D reports that the supply of the motor A inverter is above its permitted range, while P0C0B stands for a lost or open supply and P0C0C for a supply that is too low. It is a generic code, so it means the same on every make.
Is it safe to drive with P0C0D?
Drive gently and only to a workshop. With P0C0D the car can go into limp mode (reduced power) to protect itself.
Will P0C0D fail an emissions test?
Yes, it can. P0C0D 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 P0C0D to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 6 hours of work. This is a job for a workshop.
Will P0C0D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.