P0E03 code meaning
Generator Phase U Current Sensor Circuit High
Powertrain system Generic code P0Exx codes Check engine light
What P0E03 means
P0E03 is the upper-limit fault of the current sensor that measures phase U of the generator inverter: its signal is pinned near the supply rail. In the 2023 Outlander PHEV, Mitsubishi lets the generator control unit set P0E03-00 when the U-phase voltage climbs to at least 4.5 V and remains there for 0.2 s with the unit supplied by at least 8 V; for the 2018 model the code list blames a short to the supply or a shorted current sensor 1. A reading this high would mean a phase current far beyond anything the generator delivers, so the controller treats it as an electrical defect and not as overcurrent; genuine overcurrent has codes of its own, at Ford for instance P0A71. On the 2023 model the MIL is switched on as well. Low signal: P0E02, zero-point fault: P0E01.
P0E03 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0E03
- MIL and hybrid system warning light on
- Generator switched off or strongly limited
- Engine runs more often without charging the battery
Common causes of P0E03
- Most likelySensor signal shorted to its supply voltage
- PossibleCurrent sensor in the power drive unit failed with high output
- Less likelyLost sensor ground or reference inside the inverter
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Generator phase u current sensorWiring harnessHybrid control module
What each part of P0E03 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 03 | The exact fault in that area. |
What to do next
- Note P0E03 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 P0E03
What does P0E03 mean?
P0E03 means "Generator Phase U Current Sensor Circuit High". P0E03 is the upper-limit fault of the current sensor that measures phase U of the generator inverter: its signal is pinned near the supply rail. It is a generic code, so it means the same on every make.
Is it safe to drive with P0E03?
Drive gently and only to a workshop. With P0E03 the car can go into limp mode (reduced power) to protect itself.
Will P0E03 fail an emissions test?
Yes, it can. P0E03 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 P0E03 to fix?
Difficulty: workshop only. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will P0E03 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.