P0AEDDrive Motor Inverter Temperature Sensor A Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- The inverter of an electric drive motor carries thermistors near its power switches so the controller can derate before the IGBTs overheat. In GM's hybrid tables, inverter temperature sensor A is the phase U sensor of the inverter for motor A. P0AED is the general circuit code for it, used for an electrical fault that is not classified as low, high or erratic. No manufacturer documents this exact code publicly; GM reports the specific siblings P0AEE, P0AEF and P0AF0 instead. CARB requires monitoring of hybrid components and their sensors for circuit faults. Without a valid inverter temperature the controller has to assume the worst and usually limits motor torque. The sensor is built into the power inverter module, so repair often means replacing that unit.
- What you may notice
- Hybrid system warning or check engine lamp
- Reduced electric drive power
- Possible loss of electric drive
- Likely causes
- LikelyInternal fault of the sensor inside the power inverter module
- PossibleCorroded or loose connector at the inverter module
- RareSoftware fault in the motor control processor
- 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.