P0E8D code meaning
Drive Motor A Inverter Voltage Sensor B Circuit Range/Performance
Powertrain system Generic code P0Exx codes Check engine light
What P0E8D means
P0E8D says that voltage sensor B of the drive motor A inverter delivers a value that is electrically fine but disagrees with other readings of the same bus. Mitsubishi details the check for the 2023 Outlander PHEV, where sensor B is the main channel at capacitor 2 (V2M): with the boost converter switched off and the unit powered with 8 V or more for 0.5 s, a gap of at least 100 V to the rear motor unit, or of at least 50 V to capacitor 1, lasting 0.2 s sets the code, and the hint points to the power drive unit. Audi lists P0E8D00 with P0C0C00 in the electric drive of 2025-2026 Q6 and A6 e-tron models; if all entries appear together with a red high-voltage warning, the power electronics are replaced. Hard circuit faults are P0E8C, P0E8E and P0E8F.
P0E8D at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 6 hours
- Clears after repairAfter a drive cycle
Symptoms of P0E8D
- Red high-voltage system warning at start, stop safely (Audi)
- MIL and hybrid warning, reduced or no electric drive
Common causes of P0E8D
- Most likelyFault in the power electronics or its voltage measurement (Mitsubishi, Audi)
- PossibleDrift of voltage channel B so that it no longer matches the other channels
- Less likelyWrong reference value from another high-voltage unit (rear motor unit, battery management)
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 bDrive motor a inverterHybrid control module
What each part of P0E8D means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 8D | The exact fault in that area. |
What to do next
- Note P0E8D 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 P0E8D
What does P0E8D mean?
P0E8D means "Drive Motor A Inverter Voltage Sensor B Circuit Range/Performance". P0E8D says that voltage sensor B of the drive motor A inverter delivers a value that is electrically fine but disagrees with other readings of the same bus. It is a generic code, so it means the same on every make.
Is it safe to drive with P0E8D?
Drive gently and only to a workshop. With P0E8D the car can go into limp mode (reduced power) to protect itself.
Will P0E8D fail an emissions test?
Yes, it can. P0E8D 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 P0E8D to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 6 hours of work. This is a job for a workshop.
Will P0E8D 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.