P0A2ADrive Motor A Temperature Sensor A Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- A thermistor in the stator of traction motor A reports winding temperature so the inverter can cut torque before the insulation overheats. P0A2A is the general circuit fault; the failure type sits in the extension byte. McLaren uses P0A2A1C on the Artura when a short or broken wire drives the sensor voltage out of range and P0A2A29 for an invalid signal. GM instead splits the electrical faults into P0A2C and P0A2D. Siblings: P0A2B plausibility, P0A2C low signal (hot), P0A2D high signal (cold or open), P0A2E dropouts, P0A2F real overheating; P2DAC is the same fault on a second sensor B. Hyundai shows the sensor sits inside the transaxle. Expect a hybrid warning and reduced electric power.
- What you may notice
- Hybrid system warning or check engine light
- Reduced electric drive power
- Implausible motor temperature in live data
- Likely causes
- LikelyBroken or shorted sensor wire between motor and inverter
- PossibleLoose or corroded connector at the drive unit
- PossibleThermistor failed inside the motor or transaxle
- RareFaulty sensor input in the inverter/motor control module
- 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: €150 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.