P0E8C code meaning
Drive Motor A Inverter Voltage Sensor B Circuit
Powertrain system Generic code P0Exx codes Check engine light
What P0E8C means
The inverter of drive motor A may measure its high-voltage DC level at more than one point; sensor B is the second of those channels. P0E8C is the general circuit code for it, used when the signal is missing or electrically invalid without a clear low, high or plausibility verdict. Sensor A of the same inverter uses P0D2D, and a mismatch between both is P2E1A. No manufacturer documents P0E8C itself. Mitsubishi shows what sensor B can be: in the 2023 Outlander PHEV the power drive unit reads the boosted capacitor 2 voltage on a main channel, called V2M, and assigns its faults to P0E8D to P0E8F, while capacitor 1 belongs to sensor A. CARB requires such inputs to be checked for circuit faults. Without a trusted value the controller limits or blocks electric drive.
P0E8C at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 5 hours
- Clears after repairAfter a drive cycle
Symptoms of P0E8C
- Hybrid or EV system warning together with the MIL
- Reduced electric drive power or vehicle not ready to drive
Common causes of P0E8C
- Most likelySensing circuit for voltage channel B inside the power electronics defective
- PossibleLow-voltage connector or harness of the inverter loose or damaged
- Less likelySoftware fault in the motor control unit
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Drive motor a inverter voltage sensor bWiring harnessHybrid control module
What each part of P0E8C means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 8C | The exact fault in that area. |
What to do next
- Note P0E8C 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 P0E8C
What does P0E8C mean?
P0E8C means "Drive Motor A Inverter Voltage Sensor B Circuit". The inverter of drive motor A may measure its high-voltage DC level at more than one point; sensor B is the second of those channels. It is a generic code, so it means the same on every make.
Is it safe to drive with P0E8C?
Drive gently and only to a workshop. With P0E8C the car can go into limp mode (reduced power) to protect itself.
Will P0E8C fail an emissions test?
Yes, it can. P0E8C 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 P0E8C to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 5 hours of work. This is a job for a workshop.
Will P0E8C 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.