P2DD2Control Pilot Charging Switch B Intermittent/Erratic
- Generic OBD-II code · Powertrain
- How the car detects it
- P2DD2 is stored when the signal of charging switch B changes state erratically: it drops out or toggles for brief moments, while lasting faults would end up as P2DCE, P2DD0 or P2DD1. Loose terminals, green corrosion at inlet pins or the module plug, and conductors that break contact only when the car moves or temperatures change are the usual suspects. On the pilot line each lost request counts: a J1772 station supplies power only while it sees roughly 6 V, the level that asks for current, so every dropout makes it switch off and possibly on again. No manufacturer documents P2DD2 publicly; under CARB rules a plug-in hybrid must notice a charger fault that breaks off charging. Switch A counterpart: P0CFC. Charging sessions stop and restart for no visible reason, and the battery may not be full in the morning.
- What you may notice
- Charging stops and restarts repeatedly
- Battery not fully charged after a charging session
- Likely causes
- LikelyLoose terminal in the charge inlet or module connector
- PossibleCorrosion from water ingress at the charge inlet
- RareChafed wire losing contact with movement or temperature
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.