P2C92Hybrid/EV Battery Contactor Control Supply Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- 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.
- What you may notice
- Vehicle does not become ready to drive
- Charging does not start
- Hybrid or EV system warning
- Likely causes
- 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
- RareBattery controller input or driver stage defective
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €30 – €3,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.