P0D03Control Pilot Charging Ventilation Switch Circuit High
- Generic OBD-II code · Powertrain
- How the car detects it
- Here the line that drives or reports the ventilation switch reads above its valid range, which points to a short to a supply voltage or a driver stage that no longer switches. The ventilation switch is the vehicle-side element that requests charging with ventilation by loading the control pilot with roughly 270 Ω and lowering it to around 3 V. No manufacturer documents this code publicly; the closest documented test is P0D01 on the Chevrolet Volt, where GM judges the switch from the pilot voltage it produces in a self-test with the cord unplugged, and CARB requires plug-in vehicles to monitor the charging system. Low readings are P0D02, an open circuit P0D00, intermittent faults P0D04. Effects range from a stored code only to a refused charging session, depending on which switch state the fault forces.
- What you may notice
- Stored code, sometimes with a charging system warning
- Charging refused if the switch is forced closed
- Likely causes
- LikelyVentilation switch control or feedback wire shorted to a supply voltage
- PossibleOutput stage in the charging module no longer switching
- RareLost ground at the switch letting the line float high
- 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.