P0D7F code meaning
A/C Compressor Motor Phase W Current High
Powertrain system Generic code P0Dxx codes Check engine light
What P0D7F means
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.
P0D7F 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 P0D7F
- Check engine light after two trips
- Air conditioning inoperative
Common causes of P0D7F
- Most likelyPhase W current sensor reading negative at standstill
- 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 wInverter
What each part of P0D7F means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 7F | The exact fault in that area. |
What to do next
- Note P0D7F 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 P0D7F
What does P0D7F mean?
P0D7F means "A/C Compressor Motor Phase W Current High". P0D7F is the negative-direction current code for phase W of the electric A/C compressor motor. It is a generic code, so it means the same on every make.
Is it safe to drive with P0D7F?
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 P0D7F fail an emissions test?
P0D7F 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 P0D7F to fix?
Difficulty: workshop only. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will P0D7F 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.