P0D04Control Pilot Charging Ventilation Switch Intermittent/Erratic
- Generic OBD-II code · Powertrain
- How the car detects it
- P0D04 covers short, irregular disturbances in the ventilation switch circuit: the signal drops out or flickers, while lasting faults would be stored as P0D00, P0D02 or P0D03. Worn or corroded contacts in the charge inlet or module connector, and wires that lose contact under vibration, are the obvious suspects. Whenever the ventilation switch closes even briefly, it pulls the pilot toward about 3 V, so a station without ventilation suddenly sees a demand it cannot meet and may switch off. No manufacturer documents this code publicly; GM's Chevrolet Volt shows how the switch is checked via P0D01, and CARB requires plug-in vehicles to monitor the charging system. In practice the driver notices charging sessions that stop for no obvious reason and a code that comes back after clearing.
- What you may notice
- Charging sessions stop without obvious reason
- Code returns after clearing
- Likely causes
- LikelyLoose or spread terminal in the ventilation switch circuit
- PossibleCorrosion or moisture in the charge inlet or module connector
- RareChafed wire with contact loss under vibration
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.