P2DD1Control Pilot Charging Switch B Circuit High
- Generic OBD-II code · Powertrain
- How the car detects it
- P2DD1 reports a voltage on the drive or feedback wire of switch B that is higher than it should be. Likely culprits are a wire touching battery voltage or another feed somewhere between inlet and module, or a transistor stage that has lost the ability to pull its output low. Whether the switch then stays open or closed depends on the design. If it stays open, the pilot remains at about 9 V, the J1772 state of a connected vehicle that does not ask for energy, and the station keeps the cable dead. No manufacturer documents P2DD1 publicly; CARB's plug-in rules ask for detection of on-board charger faults that prevent charging. Low side: P2DD0; plausibility: P2DCF; switch A high: P0CFB. Check connectors for moisture and pushed-back pins before replacing the module.
- What you may notice
- Car stays in plugged-in state, station supplies no power
- Charging session cannot be ended cleanly
- Likely causes
- LikelySwitch B line shorted to a supply voltage
- PossibleDriver stage in the charging module no longer pulling low
- PossibleMoisture or pushed-back pins at inlet or module connector
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.