Powertrain, generic · Hybrid propulsion

P0D7F A/C Compressor Motor Phase W Current High

Check engine lightOn
EmissionsNot relevant
Drive cycleRequired
Limp modeNo

P0D7F is the negative-direction current code for phase W of the electric A/C compressor motor. In GM's first-generation Volt and the 2016 ELR the inverter reports a W-phase current of −68 A or lower while the motor is stopped and no speed is requested; 30 such readings in 60 samples at 50 ms set the code, Type B with MIL after two trips, and a 12 V reset is required before it can pass. Since no current can flow in a stopped motor, a sensor offset or a fault in the measuring circuit is the cause, not the refrigerant system. Repair is normally a compressor assembly. GM's second-generation Volt no longer lists these phase codes. Related: P0D7E on the same phase, P0D7B and P0D7D on the others.

Likely causes

Phase W current sensor reading negative at standstill
Fault in the inverter's current measuring circuit

Symptoms

  • Check engine light after two trips
  • Air conditioning inoperative

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 winverter

Related codes

P0D7EP0D7BP0D7DP0D6F

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