P2DAD code meaning
Drive Motor A Temperature Sensor B Circuit Range/Performance
Powertrain system Generic code P2Dxx codes Check engine light
What P2DAD means
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.
P2DAD at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 12 hours
- Clears after repairAfter a drive cycle
Symptoms of P2DAD
- 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
Common causes of P2DAD
- Most likelySensor B thermistor drifted from its resistance curve
- PossibleAdded resistance at a worn or corroded terminal
- Less likelyProbe no longer seated firmly against the winding
- Less likelyFault in the reference value, e.g. sensor A or coolant temperature
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 P2DAD means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| AD | The exact fault in that area. |
What to do next
- Note P2DAD 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 P2DAD
What does P2DAD mean?
P2DAD means "Drive Motor A Temperature Sensor B Circuit Range/Performance". P2DAD covers a sensor B signal that stays inside the electrical window yet does not fit the situation. It is a generic code, so it means the same on every make.
Is it safe to drive with P2DAD?
Drive gently and only to a workshop. With P2DAD the car can go into limp mode (reduced power) to protect itself.
Will P2DAD fail an emissions test?
Yes, it can. P2DAD 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 P2DAD to fix?
Difficulty: workshop only. A typical repair takes 1 to 12 hours of work. This is a job for a workshop.
Will P2DAD clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.