P0A4C code meaning
Generator Position Sensor Circuit Range/Performance
Powertrain system Generic code P0Axx codes Check engine light
What P0A4C means
P0A4C means the generator resolver delivers signals that are electrically present but implausible, so the computed rotor angle cannot be trusted. Mitsubishi documents the exact limits for the 2023 Outlander PHEV: the sine or cosine winding voltage must stay between 2.1 and 2.9 V; if either leaves that window for 0.28 s, or an internal status fault persists for 0.31 s, the generator control unit stores P0A4C. Typical triggers are a corroded or loose resolver plug, a chafed shield picking up noise, a winding that has drifted, or a faulty input stage in the power drive unit. P0A4B is the general circuit fault, P0A4D and P0A4E the hard low and high signal, P0A4F a sporadic dropout. Expect a hybrid warning, reduced power and possibly no engine start via the generator.
P0A4C at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 8 hours
- Clears after repairAfter a drive cycle
Symptoms of P0A4C
- Hybrid system warning and MIL
- Reduced drive power or engine-only operation
- Engine start via the generator not possible
Common causes of P0A4C
- Most likelyCorroded or loose resolver connector
- PossibleDamaged shielding letting interference onto the sine/cosine lines
- PossibleResolver winding drifted out of tolerance
- Less likelyFaulty resolver input stage in the 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 sensorWiring harnessHybrid control module
What each part of P0A4C means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| A | Area: hybrid propulsion. |
| 4C | The exact fault in that area. |
What to do next
- Note P0A4C 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 P0A4C
What does P0A4C mean?
P0A4C means "Generator Position Sensor Circuit Range/Performance". P0A4C means the generator resolver delivers signals that are electrically present but implausible, so the computed rotor angle cannot be trusted. It is a generic code, so it means the same on every make.
Is it safe to drive with P0A4C?
Drive gently and only to a workshop. With P0A4C the car can go into limp mode (reduced power) to protect itself.
Will P0A4C fail an emissions test?
Yes, it can. P0A4C 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 P0A4C to fix?
Difficulty: workshop only. A typical repair takes 1 to 8 hours of work. This is a job for a workshop.
Will P0A4C clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.