P0C0F code meaning
Drive Motor B Inverter Power Supply Circuit Low
Powertrain system Generic code P0Cxx codes Check engine light
What P0C0F means
P0C0F means the supply of the motor B inverter is present but below its permitted range. P0C0E covers a lost or open supply, P0C10 a supply that is too high, and P0C0C is the same fault on motor A. No manufacturer documents P0C0F publicly. GM's tables for P0C0E name the supply in question: the power feed of the gate-drive board, checked phase by phase with run/crank voltage between 9.5 and 18 V on the 2012 trucks. A sagging rail can no longer switch the power transistors fully, so the inverter protects itself. CARB requires circuit monitoring of hybrid components. The driver typically sees a warning and loses the electric drive of motor B.
P0C0F 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 P0C0F
- Malfunction indicator lamp, hybrid system warning
- Reduced propulsion, motor B unavailable
- Fault appears mainly with low 12 V voltage, e.g. after standing
Common causes of P0C0F
- Most likelyWeak 12 V battery or DC/DC converter output feeding the inverter electronics
- PossibleCorroded connector or poor ground raising resistance in the inverter supply
- PossibleFailing internal gate-drive power supply in the motor B inverter
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Drive motor b inverterWiring harnessHybrid control module
What each part of P0C0F 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. |
| 0F | The exact fault in that area. |
What to do next
- Note P0C0F 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 P0C0F
What does P0C0F mean?
P0C0F means "Drive Motor B Inverter Power Supply Circuit Low". P0C0F means the supply of the motor B inverter is present but below its permitted range. It is a generic code, so it means the same on every make.
Is it safe to drive with P0C0F?
Drive gently and only to a workshop. With P0C0F the car can go into limp mode (reduced power) to protect itself.
Will P0C0F fail an emissions test?
Yes, it can. P0C0F 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 P0C0F to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 6 hours of work. This is a job for a workshop.
Will P0C0F clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.