P0E8E: Drive Motor A Inverter Voltage Sensor B Circuit Low

P0E8E means the output of inverter voltage sensor B for drive motor A has fallen to the bottom end of its scale. On the 2023 Outlander PHEV Mitsubishi assigns it to the main measuring channel of capacitor 2 (V2M) in the power drive unit and sets it when that signal stays at no more than 0.45 V for 0.16 s, provided the unit has at least 8 V supply; monitoring runs continuously. Electrically this matches a short to ground, a broken signal path or a sensing circuit that has died, because the high-voltage bus itself would rarely read near zero while the system is active. The same channel reading high is P0E8F, while capacitor 1 on sensor A uses P0D2F for its low case. As the controller cannot trust the bus voltage, electric drive is limited or switched off and the MIL comes on.

Symptoms

• MIL and hybrid system warning
• Vehicle not ready to drive or only engine power available

Most likely causes

• Measuring circuit for capacitor 2 inside the power drive unit failed
• Signal line shorted to ground or open
• No high voltage on the bus because of a blown fuse or open contactor path

What to check, in order

Start with the simplest. You can tick off each step.

1. Read the codes with a hybrid-compatible scanner and write down the freeze frame data
2. With the connector unplugged, check whether the signal wire is making contact with ground.
3. Make sure the battery cooling air intake is clean
4. Check the 12 V auxiliary battery, which can also trigger warnings
5. Leave any high-voltage measurements to a specialized repair shop

Good to know

• It can trigger limp mode.
• It affects emissions.

What each character of P0E8E means

• P: Powertrain: engine and transmission
• 0: Generic code: same on every make
• E: Subsystem depends on the code range
• 8E: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0E8E?

If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.

What causes code P0E8E?

The most common causes are: measuring circuit for capacitor 2 inside the power drive unit failed; signal line shorted to ground or open; no high voltage on the bus because of a blown fuse or open contactor path.

Related codes

• P0E8FDrive Motor A Inverter Voltage Sensor B Circuit High
• P0E8CDrive Motor A Inverter Voltage Sensor B Circuit
• P0E8DDrive Motor A Inverter Voltage Sensor B Circuit Range/Performance
• P0D2FDrive Motor A Inverter Voltage Sensor A Circuit Low

Sources

• mitsubishitechinfo.com: N503240390000700USA
• law.cornell.edu: 13 CCR 1968.2

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.