P0BDFDrive Motor Inverter Temperature Sensor E Circuit Intermittent/Erratic
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0BDF flags an unstable signal from inverter temperature sensor E: the reading jumps or drops out briefly instead of staying out of range, typically from a loose connector, a cracked solder joint or an ageing thermistor. In GM's hybrid tables sensor E is the phase W sensor of the motor A inverter, but GM does not list this erratic code; no manufacturer documents P0BDF publicly. CARB requires hybrid sensor circuits to be checked for circuit faults, which includes intermittent signals. Unlike P0BDD and P0BDE, the value returns to plausible levels between faults, so the code may come and go. Because the controller cannot trust the sensor, it usually reduces motor power while the fault is present.
- What you may notice
- Malfunction indicator lamp that comes and goes
- Occasional loss of electric drive power
- Likely causes
- LikelyLoose, corroded or vibrating connector at the inverter
- PossibleCracked solder joint on the inverter sensing board
- RareAgeing thermistor with unstable resistance
- 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.