Powertrain, generic · Hybrid propulsion

P0D6F A/C Compressor Motor Current High

Check engine lightOn

EmissionsNot relevant

Drive cycleRequired

Limp modeNo

P0D6F flags excessive current drawn by the electric A/C compressor on its high-voltage DC link while the motor is running. GM's first-generation Volt (2011–2015) and the 2016 Cadillac ELR set it when the DC link current exceeds 27 A in 30 of 60 samples taken every 50 ms with a compressor speed request above zero; it is Type B, MIL after two trips. A separate maker code, P1EC9, catches momentary peaks above 60 A. The second-generation Volt tables no longer list P0D6F. High current points to a mechanically binding or liquid-slugging compressor, a shorted motor winding or a failing power stage; overcharged refrigerant or very high head pressure can also raise the load. Phase-specific current faults are P0D7A to P0D7F.

Likely causes

Compressor mechanically stiff or seizing

Shorted winding in the compressor motor

Refrigerant overcharge or excessive high-side pressure

Failing power stage in the compressor inverter

Symptoms

Check engine light after two trips
Air conditioning cuts out under load
Unusual noise from the compressor

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 motorwiring harnessac compressor module

References: gsi.ext.gm.com, gsi.ext.gm.com, gsi.ext.gm.com, patents.google.com.