P2DAF code meaning
Drive Motor A Temperature Sensor B Circuit High
Powertrain system Generic code P2Dxx codes Check engine light
What P2DAF means
P2DAF is the high-side counterpart: the sensor B voltage rises close to the reference. For an NTC probe that would be an impossibly cold winding, so the controller treats it as an interrupted circuit – broken lead, unplugged or corroded connector, cracked thermistor – or, less often, a short to a supply voltage. A UAES patent on stator sensor diagnosis describes the principle: upper and lower voltage limits sit just inside the supply rails, and a reading outside them counts as a circuit fault before any plausibility logic runs. Mitsubishi's equivalent for the V-phase probe of its Outlander PHEV (2023) is P3052, set once the signal reaches 4.93 V and stays there half a second. No manufacturer publishes P2DAF. The low side is P2DAE. Without sensor B the inverter may hold back torque to protect the winding.
P2DAF 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 P2DAF
- Hybrid system warning or check engine light
- Sensor B shows an implausibly low temperature in live data
- Electric drive power limited
Common causes of P2DAF
- Most likelyOpen signal or ground lead of sensor B
- PossibleConnector unplugged or terminal backed out, often after drive unit work
- PossibleThermistor open or cracked inside the stator
- Less likelySignal lead shorted to a supply voltage
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 P2DAF means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| AF | The exact fault in that area. |
What to do next
- Note P2DAF 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 P2DAF
What does P2DAF mean?
P2DAF means "Drive Motor A Temperature Sensor B Circuit High". P2DAF is the high-side counterpart: the sensor B voltage rises close to the reference. It is a generic code, so it means the same on every make.
Is it safe to drive with P2DAF?
Drive gently and only to a workshop. With P2DAF the car can go into limp mode (reduced power) to protect itself.
Will P2DAF fail an emissions test?
Yes, it can. P2DAF 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 P2DAF to fix?
Difficulty: workshop only. A typical repair takes 1 to 12 hours of work. This is a job for a workshop.
Will P2DAF clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.