OBD-II code · Powertrain (generic)
P0EAC A/C Compressor Motor Voltage Sensor B Circuit Low
The ECM detects a low fault on the a/c compressor motor voltage sensor b circuit. Reading cannot be used reliably for control.
Is it safe to drive with P0EAC?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to ground
- PossibleInternal sensor short
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Usually unaffected
- Parts involved
- AC Compressor Motor Voltage Sensor B, Wiring Harness
Related codes
- P0D6BA/C Compressor Motor Voltage Sensor A Circuit Low
- P0EA9Auxiliary Cooling System Performance
- P0EAAA/C Compressor Motor Voltage Sensor B Circuit
- P0EABA/C Compressor Motor Voltage Sensor B Circuit Range/Performance
- P0EADA/C Compressor Motor Voltage Sensor B Circuit High
- P0EAEA/C Compressor Motor Voltage Sensor B Circuit Intermittent/Erratic
- P0EAFA/C Compressor Motor Current Sensor Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.