Powertrain, generic

P0E29 Drive Motor Inverter Temperature Sensor H Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

With P0E29 the controller doubts the reading of inverter temperature sensor H although its voltage is valid. On the 2023 Outlander PHEV Mitsubishi uses it for IGBT sensor 8 of the front motor unit, the V-phase H2 position. The cold-start comparison is the same one used for sensors 1 to 7: soak of 600 s or more, IGBTs off, supply at least 8 V, test window of 1.5 s; a difference above 47 °C to either of two reference IGBT temperatures, held for 0.1 s, stores P0E29-00 and lights the MIL and the hybrid warning light. A sensor that is wrong by that much after a cold soak is offset, not overheated. The sibling for the U-phase sensor is P0E24. Mitsubishi verifies it on a test drive before installing a new power drive unit.

Likely causes

Sensor H offset against the other IGBT sensors
Measuring circuit in the power drive unit faulty
Uneven cooling of the inverter

Symptoms

  • MIL and hybrid warning light on
  • Driving usually unaffected

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–4,000
Time0.5–6 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

P0E28P0E2AP0E2BP0E2CP0E24P0AF3

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