P0C5E code meaning
Drive Motor A Position Sensor Circuit B Intermittent/Erratic
Powertrain system Generic code P0Cxx codes Check engine light
What P0C5E means
P0C5E captures brief interruptions or spikes on Circuit B, the second winding of the motor A resolver, that clear again before a firm low, high or plausibility fault can be confirmed. No manufacturer documents this code publicly. GM leaves such events to the debounce of P0C5C and P0C5D, which on its eAssist cars tolerates short outages and only reports a repeating pattern. Where P0C5E is used, the search starts at the mechanical joints of the S2/S4 path: crimp quality, terminal grip, a cable clip that lets the harness rub on the transmission. Checking resistance while flexing the harness tends to reveal it. P0C54 is the same fault on Circuit A; both together point to the common connector.
P0C5E at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor1 to 5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0C5E
- Warning light appearing only now and then
- Momentary drop of electric torque
- No fault found on a stationary check
Common causes of P0C5E
- Most likelyLoose or weak terminal in the S2/S4 path
- PossibleHarness rubbing on the transmission because of a missing or broken clip
- Less likelyMoisture entering the resolver plug
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Drive motor a position sensor bWiring harnessHybrid control module
What each part of P0C5E 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. |
| 5E | The exact fault in that area. |
What to do next
- Note P0C5E 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 P0C5E
What does P0C5E mean?
P0C5E means "Drive Motor A Position Sensor Circuit B Intermittent/Erratic". P0C5E captures brief interruptions or spikes on Circuit B, the second winding of the motor A resolver, that clear again before a firm low, high or plausibility fault can be confirmed. It is a generic code, so it means the same on every make.
Is it safe to drive with P0C5E?
Drive gently and only to a workshop. With P0C5E the car can go into limp mode (reduced power) to protect itself.
Will P0C5E fail an emissions test?
Yes, it can. P0C5E 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 P0C5E to fix?
Difficulty: hard. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will P0C5E clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.