P0E8CDrive Motor A Inverter Voltage Sensor B Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- 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.
- What you may notice
- Hybrid or EV system warning together with the MIL
- Reduced electric drive power or vehicle not ready to drive
- Likely causes
- LikelySensing circuit for voltage channel B inside the power electronics defective
- PossibleLow-voltage connector or harness of the inverter loose or damaged
- RareSoftware fault in the motor control unit
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €50 – €3,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.