P0EB9A/C Compressor Motor Phase W Current Sensor Circuit Low
- Generic OBD-II code · Powertrain
- How the car detects it
- P0EB9 is stored when the phase W current signal drops beneath its lower limit, for instance after the signal wire has made contact with ground or after the sensor has lost its feed. The value is then useless for motor control, and the compressor module shuts the drive down rather than run it on two phases of information. No manufacturer documents P0EB9 publicly. GM's 2011 Volt shows a comparable test: minus 68 A or lower on phase W at standstill set the older code P0D7F, rated Type B with MIL after two trips. Because the sensing sits inside the compressor, repair usually means replacing the compressor assembly once wiring and high-voltage plugs have been checked. High range: P0EB8; plausibility: P0EBA; general W circuit: P0EC0.
- What you may notice
- No cooling, compressor silent
- Climate fault indicated
- Likely causes
- PossiblePhase W measuring line shorted to ground
- PossiblePhase W sensor without supply
- PossibleDefect of the W measurement inside the compressor module
- 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.