P2DCEControl Pilot Charging Switch B Circuit/Open
- Generic OBD-II code · Powertrain
- How the car detects it
- P2DCE reports an open or otherwise faulty control circuit of charging switch B, a vehicle-side switch on the control pilot line. Under SAE J1772 the car first loads the pilot with about 2.74 kΩ, pulling the 12 V supplied by the station down to roughly 9 V; closing a charging switch puts another 1.3 kΩ in parallel, the level falls to about 6 V and the station energises the cable. With the circuit of switch B interrupted, the module cannot place this request through it. Which hardware the letter B stands for, such as a second charge inlet or a redundant path, is not published, and no manufacturer documents P2DCE. CARB asks plug-in hybrids to detect charger faults that stop or limit charging. Switch A counterpart: P0CF8. Expect a car that the station recognises but that does not charge.
- What you may notice
- Station detects the car but charging never starts
- Charging fault message in the instrument cluster
- Likely causes
- LikelyBroken wire or pushed-back pin in the switch B circuit
- PossibleSwitch or its driver inside the charging module open
- PossibleCorroded contacts at the charge 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.