Powertrain, generic (extended)

P2DB1 Drive Motor A Temperature Sensor C Circuit

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2DB1 reports a circuit fault on a third temperature sensor (C) in drive motor A. Three probes in one motor make most sense when each phase winding of the three-phase machine gets its own: Mitsubishi equips the front motor of the 2023 Outlander PHEV with U-, V- and W-phase coil sensors, and a fault on any of them lights both the hybrid warning and the MIL. The W-phase probe, its sensor 3, uses the maker's own codes P3055 to P3057 rather than P2DB1, and no manufacturer documents P2DB1 publicly. The direction of the fault is left to P2DB3 (signal low) and P2DB4 (signal high). With two other probes still working the car usually drives on, but the control unit may cap power.

Likely causes

Broken or shorted sensor C lead between motor and inverter
Loose or corroded terminal at the motor connector
Sensor C thermistor failed in its phase winding
Faulty sensor input in the inverter or motor control unit

Symptoms

  • Hybrid system warning and check engine light
  • Sensor C missing or frozen in live data while the other motor sensors read normally
  • Electric drive power capped

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€150–4,000
Time1–12 h

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

Parts involved

drive motor a temp sensor cwiring harnessinverter

Related codes

P2DB2P2DB3P2DB4P2DB5P2DACP0A2A

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