Powertrain, generic (extended)

P2DAC Drive Motor A Temperature Sensor B Circuit

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2DAC is the general circuit fault of a second temperature sensor (B) in drive motor A; sensor A has its own series from P0A2A. A motor carries a second probe either as a backup element beside the first – Sensata's hairpin sensor patent allows two NTCs, or an NTC plus a PTC, in one housing – or as a probe on another phase winding. No manufacturer documents P2DAC publicly. Mitsubishi shows the multi-probe layout on the 2023 Outlander PHEV, with coil sensors on the U, V and W phases, but files sensors 2 and 3 under its own codes from P3052 and only accepts voltages between 0.1 and 4.93 V. Which side the voltage left is recorded by P2DAE (low) and P2DAF (high), not by P2DAC. Losing the reading usually means derated electric drive.

Likely causes

Broken or shorted sensor B lead between motor and inverter
Loose, corroded or pushed-out terminal at the motor connector
Sensor B thermistor failed inside the stator
Faulty sensor input in the inverter or motor control unit

Symptoms

  • Hybrid system warning or check engine light
  • Electric drive power limited
  • Sensor B shows a fixed or missing value in live data while sensor A looks normal

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

P2DADP2DAEP2DAFP2DB0P0A2AP2DB1

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