P0D00Control Pilot Charging Ventilation Switch Circuit/Open
- Generic OBD-II code · Powertrain
- How the car detects it
- Some battery types can give off gases while charging; for that case the conductive charging standards provide a state in which the vehicle asks the station for ventilation. The vehicle signals it by switching a much smaller resistor of about 270 Ω onto the pilot, which drags the level to around 3 V; the station then only delivers power where ventilation is assured. P0D00 reports that the control circuit of this ventilation switch is open. No manufacturer documents this code publicly; GM's Chevrolet Volt monitors the switch for plausibility only (P0D01, normalized pilot voltage 0.04-0.10 in a self-test), and CARB requires plug-in vehicles to monitor the charging system. During normal charging the switch stays open, so an open circuit often goes unnoticed except for the stored code. Shorts are P0D02/P0D03.
- What you may notice
- Stored code, charging usually still works
- Charging system warning in the cluster
- Likely causes
- PossibleOpen control wire or loose connector of the ventilation switch circuit
- PossibleVentilation switch or its resistor branch open inside the module
- RareFailed driver stage in the charging control module
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.