Powertrain, generic

P0E28 Drive Motor Inverter Temperature Sensor H Circuit

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

Sensor H is the eighth temperature sensor of a drive motor inverter, and P0E28 is its general circuit code for an electrical fault without a more precise low, high or erratic finding. No manufacturer documents P0E28 publicly. Mitsubishi, whose 2023 Outlander PHEV is the documented user of the H series, calls the part FMCU IGBT temperature sensor 8 (V-phase H2) and files its faults under P0E29, P0E2A and P0E2B; the general circuit code is not listed. Which component carries letter H is up to each maker. CARB requires hybrid input components to be checked for interruptions and for readings outside their range. When the value is missing, the controller has to protect that phase by limiting torque; the sensor is part of the inverter assembly.

Likely causes

Sensor H or its sensing board in the inverter failed
Connector or internal wiring fault in the inverter
Evaluation input of the motor control unit faulty

Symptoms

  • Hybrid warning light and MIL on
  • Limited motor torque

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 hwiring harnesshybrid control module

Related codes

P0E29P0E2AP0E2BP0E2CP0E23P0BE0

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