Powertrain, generic (extended)

P2DAD Drive Motor A Temperature Sensor B Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P2DAD covers a sensor B signal that stays inside the electrical window yet does not fit the situation. CARB asks for rationality checks on hybrid input components where feasible, logged under a code of their own apart from circuit and range faults. The obvious reference is a neighbouring probe: on the 2023 Outlander PHEV Mitsubishi compares its V-phase coil sensor (sensor 2, own code P3054) with the U-phase value after more than 90 minutes off and with the inverter switched off, and rejects it when the gap exceeds 26 °C for longer than 0.8 s. A UAES patent adds a running check: when winding current should heat the stator but the reading does not rise, the sensor is flagged as reading low. No manufacturer publishes P2DAD. Thermistor drift and extra contact resistance are the usual causes.

Likely causes

Sensor B thermistor drifted from its resistance curve
Added resistance at a worn or corroded terminal
Probe no longer seated firmly against the winding
Fault in the reference value, e.g. sensor A or coolant temperature

Symptoms

  • Hybrid system warning or check engine light
  • Sensor B differs clearly from sensor A after the car has stood overnight
  • Electric drive power limited in some situations

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 bwiring harnessinverter

Related codes

P2DACP2DAEP2DAFP0A2BP2DB2

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