P2CC2Generator Voltage Sense Circuit B Range/Performance
- Generic OBD-II code · Powertrain
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2CC2 means the voltage arriving on generator sense circuit B is within electrical limits but does not agree with what the controller expects, such as the battery voltage measured elsewhere, the commanded set point or the reading of sense circuit A. The usual cause is a voltage drop: corroded ring terminals, a loose ground strap or a damaged fusible link make the sensed value lag behind reality. Because the sense lead itself carries no current, any noticeable difference between it and the output terminal points to resistance in one of the paths. No manufacturer documents P2CC2 publicly. CARB only requires charging-system inputs to be monitored when they influence emissions or feed other diagnostics, so the code often stays without MIL. Circuit A's equivalent is P063B.
- What you may notice
- Charging warning lamp on or flickering
- Battery not fully charged or charging voltage fluctuating
- Likely causes
- LikelyVoltage drop from corroded terminals, loose ground strap or damaged fusible link
- PossibleAlternator B delivering too little or unstable output
- RareBattery with high internal resistance distorting the comparison
- Repair
- Medium · Often possible to do yourself.Typical cost: €20 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.