P2C95Hybrid/EV Battery Contactor Control Supply Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2C95 is the upper-limit counterpart of P2C94: the voltage on the feed for the contactor coil drivers exceeds what the battery controller accepts. An excessive supply is less common than a weak one, but it heats the coils and stresses the driver transistors, and it can mean the measurement is wrong, for instance when the sense line touches a higher potential or the feed regulator inside the controller has failed. LG Energy Solution patent US12007445B2 shows that controllers measure this supply before each contactor closes; an upper limit is the logical extension, although the patent itself deals with undervoltage. No manufacturer documents P2C95 publicly. Depending on strategy the controller may refuse to close contactors or open them, so loss of ready mode is possible. CARB requires monitoring of hybrid components.
- What you may notice
- Hybrid or EV system warning
- Vehicle may not become ready or may shut down HV
- Likely causes
- PossibleSupply or sense line shorted to a higher voltage
- PossibleSupply regulator or measurement in the battery controller faulty
- Rare12 V system overvoltage from a faulty DC/DC converter or jump start
- 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: €50 – €3,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.