P0EB7 code meaning
A/C Compressor Motor Phase V Current Sensor Range/Performance
What P0EB7 means
With P0EB7 the compressor's phase V current value passes the electrical limits but is not credible. The controller compares it with the other two phases and with the current it is commanding; a persistent offset, a reading that lags or is scaled wrongly, or a three-phase sum far from zero all point at the V sensor. No manufacturer documents P0EB7 publicly. GM's 2011 Volt shows one form of such a check, performed at standstill (older codes P0D7C and P0D7D at plus or minus 68 A). Rough compressor running, noise or reduced cooling can appear before the controller gives up and switches off. Electrical faults of the same phase are P0EB5, P0EB6 and P0EBB; the matching checks on U and W are P0EB4 and P0EBA.
P0EB7 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor1 to 5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0EB7
- Uneven compressor running or humming noise
- Cooling weakens, then fails
Common causes of P0EB7
- Most likelyPersistent offset or scaling error of the phase V sensor
- PossibleSlow or filtered V-phase measurement on the inverter board
- Less likelyFault in the V winding or its internal lead
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 v current sensorAc compressor module
What each part of P0EB7 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| B7 | The exact fault in that area. |
What to do next
- Note P0EB7 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 P0EB7
What does P0EB7 mean?
P0EB7 means "A/C Compressor Motor Phase V Current Sensor Range/Performance". With P0EB7 the compressor's phase V current value passes the electrical limits but is not credible. It is a generic code, so it means the same on every make.
Is it safe to drive with P0EB7?
P0EB7 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will P0EB7 fail an emissions test?
P0EB7 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 P0EB7 to fix?
Difficulty: workshop only. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will P0EB7 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.