P2C92 code meaning
Hybrid/EV Battery Contactor Control Supply Circuit/Open
Powertrain system Generic code P2Cxx codes Check engine light
What P2C92 means
The main contactors of a traction battery are relays whose coils are energised by driver stages in the battery controller, and those drivers take their energy from a dedicated supply feed. P2C92 means this feed is missing or interrupted, for example because of a blown fuse, a broken wire or a feed relay that does not pull in. Why the feed is watched at all is explained in LG Energy Solution patent US12007445B2: a coil voltage that is too weak or not yet settled can leave a contactor only partly closed, so the controller checks the supply before closing each contactor and declares a fault after repeated failed checks. No manufacturer documents P2C92 publicly. With the feed gone, no contactor can close, so the car typically refuses ready mode and charging. CARB requires monitoring of hybrid components.
P2C92 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 6 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2C92
- Vehicle does not become ready to drive
- Charging does not start
- Hybrid or EV system warning
Common causes of P2C92
- Most likelyFuse in the contactor supply feed blown
- PossibleSupply wire or connector at the battery pack interrupted
- PossibleRelay or switch feeding the contactor drivers not closing
- Less likelyBattery controller input or driver stage defective
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hybrid battery contactor control supplyWiring harnessBms
What each part of P2C92 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| C | Area: hybrid propulsion. |
| 92 | The exact fault in that area. |
What to do next
- Note P2C92 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 P2C92
What does P2C92 mean?
P2C92 means "Hybrid/EV Battery Contactor Control Supply Circuit/Open". The main contactors of a traction battery are relays whose coils are energised by driver stages in the battery controller, and those drivers take their energy from a dedicated supply feed. It is a generic code, so it means the same on every make.
Is it safe to drive with P2C92?
Drive gently and only to a workshop. With P2C92 the car can go into limp mode (reduced power) to protect itself.
Will P2C92 fail an emissions test?
Yes, it can. P2C92 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 P2C92 to fix?
Difficulty: hard. A typical repair takes 0.5 to 6 hours of work. This is a job for a workshop.
Will P2C92 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.