P2DD0Control Pilot Charging Switch B Circuit Low
- Generic OBD-II code · Powertrain
- How the car detects it
- P2DD0 says the drive or sense wire of switch B reads below its valid range. The usual reasons are a wire chafed through to body ground or a shorted transistor stage in the charging electronics. Depending on how the switch is driven, a grounded line can hold it permanently closed, so the pilot stays at the charge-request level of about 6 V, or keep it from ever closing. CARB requires plug-in hybrids to recognise charger faults that block or limit charging, but exempts failures that cannot be told apart from problems at the station; a short inside the vehicle is clearly on the car side. No manufacturer documents P2DD0 publicly. Owners may see charging begin as soon as the cable is connected, or not at all. High: P2DD1; open: P2DCE; switch A low: P0CFA.
- What you may notice
- Charging starts immediately on plug-in or not at all
- Timed charging not followed
- Charging fault message
- Likely causes
- LikelySwitch B wire chafed and shorted to ground
- PossibleOutput stage in the charging module failed shorted
- RareMoisture in the charge inlet creating a leakage path
- 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.