P2DAFDrive Motor A Temperature Sensor B Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- 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.
- What you may notice
- Hybrid system warning or check engine light
- Sensor B shows an implausibly low temperature in live data
- Electric drive power limited
- Likely causes
- 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
- RareSignal lead shorted to a supply voltage
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.