P2DAC code meaning
Drive Motor A Temperature Sensor B Circuit
Powertrain system Generic code P2Dxx codes Check engine light
What P2DAC means
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.
P2DAC at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 12 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2DAC
- 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
Common causes of P2DAC
- Most likelyBroken or shorted sensor B lead between motor and inverter
- PossibleLoose, corroded or pushed-out terminal at the motor connector
- PossibleSensor B thermistor failed inside the stator
- Less likelyFaulty sensor input in the inverter or motor control unit
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Drive motor a temp sensor bWiring harnessInverter
What each part of P2DAC means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| AC | The exact fault in that area. |
What to do next
- Note P2DAC and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2DAC
What does P2DAC mean?
P2DAC means "Drive Motor A Temperature Sensor B Circuit". P2DAC is the general circuit fault of a second temperature sensor (B) in drive motor A; sensor A has its own series from P0A2A. It is a generic code, so it means the same on every make.
Is it safe to drive with P2DAC?
Drive gently and only to a workshop. With P2DAC the car can go into limp mode (reduced power) to protect itself.
Will P2DAC fail an emissions test?
Yes, it can. P2DAC is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2DAC to fix?
Difficulty: workshop only. A typical repair takes 1 to 12 hours of work. This is a job for a workshop.
Will P2DAC clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.