Powertrain, generic

P0E23 Drive Motor Inverter Temperature Sensor G Circuit

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P0E23 is the catch-all circuit code of drive motor inverter temperature sensor G, a thermistor that watches the power switches of the motor inverter. It stands for an electrical fault the controller cannot pin down as low, high or erratic. No manufacturer documents P0E23 publicly. The only published user of the G series is Mitsubishi: in the 2023 Outlander PHEV the seventh IGBT sensor of the front motor unit (U-phase H2) reports its faults as P0E24, P0E25 and P0E26, but not as P0E23. CARB requires hybrid input components to be tested for open circuits and out-of-range signals. Without a valid temperature the inverter is usually run with reduced torque; the sensor sits inside the inverter, so repair often means that assembly.

Likely causes

Temperature sensor or sensing board inside the inverter failed
Poor contact at an internal or external inverter connector
Faulty evaluation input in the motor control unit

Symptoms

  • Hybrid system warning light and MIL on
  • Reduced electric drive power

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€150–4,000
Time1–6 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

drive motor inverter temp sensor gwiring harnesshybrid control module

Related codes

P0E24P0E25P0E26P0E27P0E28P0BE0

References: law.cornell.edu, mitsubishitechinfo.com.