P0EABA/C Compressor Motor Voltage Sensor B Circuit Low
- Generic OBD-II code · Powertrain
- How the car detects it
- P0EAB is set when the B voltage channel of the electric A/C compressor reports far less than the high-voltage battery actually supplies while the contactors are closed. Typical reasons are a sense line shorted to ground, a broken internal connection or a sensing stage without supply; a supply interrupted upstream, for instance by a high-voltage fuse, produces the same picture and should be ruled out first. No manufacturer documents P0EAB publicly. For the A channel (P0D6B), GM's 2011 Volt uses 190 V or less in 30 of 60 samples, contactors closed and no faults present, Type B. CARB calls for range checks of such inputs where hybrid cooling depends on them. The air conditioning, and possibly battery cooling, fails; the high counterpart is P0EAA.
- What you may notice
- No cooling from the air conditioning
- Charging power may be reduced if the battery cannot be cooled
- Likely causes
- LikelyVoltage sense line shorted to ground
- PossibleHigh-voltage supply to the compressor interrupted (fuse, connector)
- RareMeasuring stage in the compressor module without supply
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €80 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.