P2D92 code meaning
Starter/Generator Phase X Current Sensor Circuit High
Powertrain system Generic code P2Dxx codes Check engine light
What P2D92 means
P2D92 is set when the signal from the phase X current sensor of a belt or crankshaft starter/generator rises above the range the control electronics treat as valid. Such sensors, commonly Hall devices placed around the phase conductor, put out a voltage that tracks the current, so a value stuck near the top of the scale points to the circuit rather than to real current: a signal lead touching a supply voltage, a damaged connector or a sensor whose output has failed high. No manufacturer documents P2D92 publicly. The closest published logic is GM's eAssist belt machine, coded as drive motor A: a reading above 440 A within about 42 ms, Type B over two trips, after which current control carries on without the sensors. Low side: P2D95; Y and Z: P2D93, P2D94.
P2D92 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 P2D92
- Warning lamp or MIL, often only after the fault has been seen on two trips
- Reduced electric assist and weaker restarts after automatic engine stop
- Automatic stop-start no longer active
Common causes of P2D92
- Most likelyPhase X sensor signal wire shorted to a supply or reference voltage
- PossibleCurrent sensor output failed at the upper end of its range
- PossibleDamaged, corroded or water-contaminated connector at the starter/generator
- Less likelyFault in the evaluation circuit of the starter/generator control module
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 P2D92 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 92 | The exact fault in that area. |
What to do next
- Note P2D92 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 P2D92
What does P2D92 mean?
P2D92 means "Starter/Generator Phase X Current Sensor Circuit High". P2D92 is set when the signal from the phase X current sensor of a belt or crankshaft starter/generator rises above the range the control electronics treat as valid. It is a generic code, so it means the same on every make.
Is it safe to drive with P2D92?
Drive gently and only to a workshop. With P2D92 the car can go into limp mode (reduced power) to protect itself.
Will P2D92 fail an emissions test?
Yes, it can. P2D92 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 P2D92 to fix?
Difficulty: hard. A typical repair takes 0.5 to 4 hours of work. This is a job for a workshop.
Will P2D92 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.