P0EB2A/C Compressor Motor Phase U Current Sensor Circuit High
- Generic OBD-II code · Powertrain
- How the car detects it
- P0EB2 is set when the phase U current sensor of the electric A/C compressor sends a signal above its valid window. Current sensors in such inverters often output a voltage centred on zero current, so a stuck-high output reads like a large current in one direction even with the motor at rest. No manufacturer documents P0EB2 publicly. GM's 2011 Volt ran a standstill test that catches exactly this: plus 68 A or more on phase U with no speed request set the older code P0D7A, Type B. A short to the sensor supply, a damaged Hall element or a fault on the inverter board are typical. The compressor controller stops the motor to protect the power stage. P0EB3 covers the low side; P0EB5 and P0EB8 report the same fault on phases V and W.
- What you may notice
- Compressor will not start or stops at once
- No cooling during hot weather
- Likely causes
- LikelyDamaged Hall element of the phase U sensor
- PossiblePhase U signal shorted to the sensor supply
- RareDefect on the inverter board affecting the U channel
- 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.