P2DCFControl Pilot Charging Switch B Range/Performance
- Generic OBD-II code · Powertrain
- How the car detects it
- P2DCF means charging switch B responds electrically, but the pilot level it creates is not plausible. The only public description of such a test concerns switch A: in a GM check for the Chevrolet Volt, run only while no cable is inserted, the module shuts its internal test switch and the charging switch simultaneously, and the pilot-to-battery voltage ratio then has to lie from 0.14 to 0.28; 30 failures in 50 samples taken every 100 ms set P0CF9 as Type A. An equivalent check of switch B would catch a drifted resistor, a switch with high contact resistance or a fault where the module measures the pilot. No manufacturer documents P2DCF publicly; the MIL depends on how the maker classifies it. Circuit faults: P2DCE, P2DD0, P2DD1. Charging may be refused or stop.
- What you may notice
- Charging refused or stopping after a short time
- Charging error message
- Likely causes
- PossibleResistor in the switch B branch drifted out of tolerance
- PossibleHigh contact resistance in switch, inlet or connector
- PossibleFault in the pilot voltage measuring path of the charging module
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.