P0D7BA/C Compressor Motor Phase U Current High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0D7B is the second phase U current code of the electric A/C compressor. In GM's first-generation Volt (2011–2015) and the 2016 Cadillac ELR it sets when the phase U current sensor reads −68 A or less although the motor is stopped and no speed is requested, counted as 30 failures in 60 samples at 50 ms; Type B, MIL after two trips, with a 12 V reset required before a pass. A real current of that size at standstill is impossible, so the fault lies in the sensor or its evaluation on the inverter board, which normally means replacing the compressor. The A/C stays off while the code is active. GM's positive-direction code for the same phase is P0D7A; phases V and W use P0D7D and P0D7F.
- What you may notice
- Check engine light after two trips
- Air conditioning stays off
- Likely causes
- LikelyPhase U current sensor reading negative at standstill
- PossibleFault in the inverter's current evaluation
- 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.