P2C96Hybrid/EV Battery Disable Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Can trigger limp mode
- How the car detects it
- Besides commands over the vehicle network, many high-voltage batteries have a separate wired input through which another controller can force the contactors open. The best-known use is the crash signal: in Volkswagen patent US9586481B2 the battery opens its contactor 10–100 ms after a hard-wired crash signal, versus roughly 20–200 ms when the message arrives over CAN, and blocks reclosing until the stored fault has been erased. Coda patent US20110304202A1 also ties battery disconnection to the airbag deployment decision. What exactly feeds the disable line is up to the maker. P2C96 means this line is open. No manufacturer documents the code publicly. Many designs read a lost signal as a shutdown request, so the car may not become ready. CARB requires monitoring of hybrid components.
- What you may notice
- Vehicle does not become ready to drive
- High-voltage system warning
- Likely causes
- LikelyDisable line or its connector at the battery pack interrupted
- PossibleSending controller (e.g. crash or airbag module) not driving the line
- PossibleConnector left unplugged after body or battery repair
- RareInput stage in the battery controller defective
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €50 – €2,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.