OBD-II code · Powertrain (generic, extended)
P2C45 Battery Isolation/Voltage Stabilization Control Circuit Low
The battery isolation/voltage stabilization module reports a control circuit low condition. Power supply quality during start/stop or load shedding is impaired.
Is it safe to drive with P2C45?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyControl wire shorted to ground
- PossibleInternal module short
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Battery Isolation Module, Wiring Harness, Ecm
Related codes
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Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.