P0C0C code meaning
Drive Motor A Inverter Power Supply Circuit Low
Powertrain system Generic code P0Cxx codes Check engine light
What P0C0C means
P0C0C reports that the supply voltage of the motor A inverter is present but too low, while P0C0B covers a lost or open supply and P0C0D a supply that is too high. Which supply is meant depends on the maker: GM ties its sibling P0C0B to the gate-drive supply of the IGBTs, Mercedes to the high-voltage feed. Audi documents P0C0C on the 2025 and 2026 A6 and Q6 e-tron family: stored in the electric drive modules together with P0E8D, it comes with a red high-voltage fault warning to stop safely, and the bulletin calls for replacing the affected front or rear power electronics. CARB requires circuit monitoring of hybrid components. Without a stable supply the inverter cannot switch, so drive power is cut.
P0C0C 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 P0C0C
- Red high-voltage system warning asking to stop safely
- Loss of drive power or vehicle will not get ready to drive
Common causes of P0C0C
- Most likelyInternal fault of the drive power electronics (Audi TSB 2081725)
- PossibleWeak 12 V supply, poor ground or high-resistance connector at the inverter
- Less likelyWeak 12 V battery or DC/DC converter output
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 P0C0C 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. |
| 0C | The exact fault in that area. |
What to do next
- Note P0C0C 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 P0C0C
What does P0C0C mean?
P0C0C means "Drive Motor A Inverter Power Supply Circuit Low". P0C0C reports that the supply voltage of the motor A inverter is present but too low, while P0C0B covers a lost or open supply and P0C0D a supply that is too high. It is a generic code, so it means the same on every make.
Is it safe to drive with P0C0C?
Drive gently and only to a workshop. With P0C0C the car can go into limp mode (reduced power) to protect itself.
Will P0C0C fail an emissions test?
Yes, it can. P0C0C 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 P0C0C to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 6 hours of work. This is a job for a workshop.
Will P0C0C clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.