P0D7EA/C Compressor Motor Phase W Current Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0D7E applies to phase W, the third winding of the electric A/C compressor motor. GM's 2011–2015 Volt and 2016 Cadillac ELR check the W-phase current sensor while the motor is at rest: a reading of +68 A or more in 30 out of 60 samples at 50 ms sets the code, Type B with the MIL after two trips, and only a 12 V reset re-enables a pass. With all three phase sensors tested the same way, a fault on just one phase points to that sensor channel on the inverter board, while faults on several phases at once suggest a common supply or reference problem in the inverter. The compressor stays off. P0D7F is the negative direction on phase W; P0D7A and P0D7C cover the other two phases.
- What you may notice
- Check engine light after two trips
- Air conditioning does not run
- Likely causes
- LikelyOffset or failure of the phase W current sensor channel
- RareCommon supply or reference fault in the inverter (several phases affected)
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €150 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.