P0D7C code meaning
A/C Compressor Motor Phase V Current Low
Powertrain system Generic code P0Dxx codes Check engine light
What P0D7C means
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.
P0D7C at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor1 to 5 hours
- Clears after repairAfter a drive cycle
Symptoms of P0D7C
- Check engine light after two trips
- Air conditioning inoperative
Common causes of P0D7C
- Most likelyOffset or failure of the phase V current sensor in the inverter
- PossibleFault in the inverter's current measuring circuit
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Ac compressor motor phase vInverter
What each part of P0D7C means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 7C | The exact fault in that area. |
What to do next
- Note P0D7C and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0D7C
What does P0D7C mean?
P0D7C means "A/C Compressor Motor Phase V Current Low". P0D7C relates to phase V of the three-phase motor in an electric A/C compressor. It is a generic code, so it means the same on every make.
Is it safe to drive with P0D7C?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P0D7C fail an emissions test?
P0D7C is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P0D7C to fix?
Difficulty: workshop only. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will P0D7C clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.