P0C64 code meaning
Generator Position Sensor Circuit A
Powertrain system Generic code P0Cxx codes Check engine light
What P0C64 means
P0C64 is the catch-all entry for the first pickup circuit of the generator resolver, the sensor that reports rotor angle so the inverter can energise the generator phases at the right moment. It is used when the controller judges that circuit faulty without sorting the fault into low, high, implausible or sporadic. No manufacturer documents P0C64 publicly. Mitsubishi shows how such faults get split on the 2023 Outlander PHEV: the sine winding, which it treats as circuit A, has its own low and high codes (P0C66, P0C67), and a failed internal status goes to P0A4B. CARB asks for an approved generator monitoring plan and for circuit and range checks on hybrid inputs. Expect a hybrid system warning and, depending on the design, reduced power or no charging by the engine.
P0C64 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 10 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0C64
- Hybrid system or malfunction indicator lamp on
- Engine runs but the high-voltage battery is no longer charged by the generator
- Reduced power or hybrid functions disabled
Common causes of P0C64
- Most likelyOpen, chafed or shorted lead in the first resolver pickup winding circuit
- PossibleCorroded or loose resolver connector between generator and inverter
- PossibleDamaged pickup winding inside the generator resolver stator
- Less likelyFault in the generator control electronics of the inverter or power drive unit
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Generator position sensor aWiring harnessHybrid control module
What each part of P0C64 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. |
| 64 | The exact fault in that area. |
What to do next
- Note P0C64 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 P0C64
What does P0C64 mean?
P0C64 means "Generator Position Sensor Circuit A". P0C64 is the catch-all entry for the first pickup circuit of the generator resolver, the sensor that reports rotor angle so the inverter can energise the generator phases at the right moment. It is a generic code, so it means the same on every make.
Is it safe to drive with P0C64?
Drive gently and only to a workshop. With P0C64 the car can go into limp mode (reduced power) to protect itself.
Will P0C64 fail an emissions test?
Yes, it can. P0C64 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 P0C64 to fix?
Difficulty: workshop only. A typical repair takes 1 to 10 hours of work. This is a job for a workshop.
Will P0C64 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.