P2D95 code meaning
Starter/Generator Phase X Current Sensor Circuit Low
Powertrain system Generic code P2Dxx codes Check engine light
What P2D95 means
P2D95 means the phase X current sensor of the starter/generator delivers a signal below the lowest value the controller accepts. The machine works as motor and as generator, so its phase currents change direction and the sensor reports signed values; GM's eAssist table, for example, uses limits of minus and plus 440 A. Low therefore does not mean little current, but an implausibly large reading in the negative direction or an output that has collapsed. Likely reasons are a signal wire shorted to ground, a lost sensor supply or a broken sensor. No manufacturer documents P2D95 publicly; in the GM analogue the U-phase low code sets below -440 A as a two-trip Type B fault. P2D92 is the high side, P2DC1 the general phase X circuit fault and P2DC2 its range check.
P2D95 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2D95
- Warning lamp after repeated detection
- Starter/generator runs in a restricted mode with less torque
- Stop-start unavailable
Common causes of P2D95
- Most likelyPhase X sensor signal wire shorted to ground or housing
- PossibleSensor supply voltage missing because of an open wire or terminal
- PossibleCurrent sensor output failed at the lower end of its range
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Starter generator phase x current sensorWiring harnessStarter generator control module
What each part of P2D95 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 95 | The exact fault in that area. |
What to do next
- Note P2D95 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 P2D95
What does P2D95 mean?
P2D95 means "Starter/Generator Phase X Current Sensor Circuit Low". P2D95 means the phase X current sensor of the starter/generator delivers a signal below the lowest value the controller accepts. It is a generic code, so it means the same on every make.
Is it safe to drive with P2D95?
Drive gently and only to a workshop. With P2D95 the car can go into limp mode (reduced power) to protect itself.
Will P2D95 fail an emissions test?
Yes, it can. P2D95 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2D95 to fix?
Difficulty: hard. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will P2D95 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.