Powertrain, generic · Hybrid propulsion

P0D7C A/C Compressor Motor Phase V Current Low

Check engine lightOn
EmissionsNot relevant
Drive cycleRequired
Limp modeNo

P0D7C relates to phase V of the three-phase motor in an electric A/C compressor. GM documents it in the 2011–2015 Volt and 2016 ELR tables as a standstill check: with the compressor speed request at 0 rpm the measured phase V current should be near zero, and a value of +68 A or above in 30 of 60 samples (50 ms each) sets the code. It is Type B, so the MIL comes on after two trips, and the result only returns to pass after a 12 V reset. The later Volt tables from 2016 do not list it. As the motor cannot carry that current while stopped, an offset in the inverter's phase V current sensor is the likely cause, and the compressor is normally replaced. Related: P0D7D for the negative side, P0D7A and P0D7E for the other phases.

Likely causes

Offset or failure of the phase V current sensor in the inverter
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 vinverter

Related codes

P0D7DP0D7AP0D7EP0D6F

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