Powertrain, generic

P0EB5 A/C Compressor Motor Phase V Current Sensor Circuit High

Check engine lightUsually off

EmissionsNot relevant

Drive cycleNot required

Limp modeNo

P0EB5 is the high-range fault of the phase V current sensor in the compressor inverter. The reading lies above the window the sensor can produce in normal service, which points to a short towards supply voltage, a defective sensing element or an internal fault in the power module rather than to real overcurrent. Unusually, the V-phase codes start with high, low and plausibility, while the general V circuit code comes later as P0EBB. No manufacturer documents P0EB5 publicly. GM's 2011 Volt detected a stuck V-phase sensor at standstill at plus 68 A or more under the older code P0D7C, Type B. The compressor drive is switched off, and refrigerant-based battery cooling may be lost with it. Related codes: P0EB6, P0EB7 and P0EBB.

Likely causes

Defective phase V sensing element

Phase V signal shorted towards supply voltage

Internal fault in the compressor power module

Symptoms

Compressor switched off, no cooling
Battery may warm up more during fast charging

Repair estimate

DifficultyShop_onlyWorkshop job

Parts and labour€150–2,500

Time1–5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

ac compressor motor phase v current sensorac compressor module

Related codes

P0EB6 P0EB7 P0EBB P0EB2 P0EB8 P0D7C

References: gsi.ext.gm.com, law.cornell.edu.