P0D02Control Pilot Charging Ventilation Switch Circuit Low
- Generic OBD-II code · Powertrain
- How the car detects it
- P0D02 marks the control or feedback line of the ventilation switch as too low, usually a harness wire grounded somewhere along its route or a charging module driver that has failed shorted. That switch places a resistor of about 270 Ω across the pilot so that the level falls to roughly 3 V, the state in which a vehicle demands charging with ventilation. No manufacturer documents this code publicly; GM's Chevrolet Volt evaluates the same switch by the pilot level it causes (P0D01, ratio 0.04-0.10 in a self-test), and CARB requires plug-in vehicles to monitor the charging system. If the short holds the switch closed, a station without ventilation will refuse to deliver power; if it holds it open, the fault mostly shows only as a stored code. The high-side fault is P0D03, the open line P0D00.
- What you may notice
- Charging refused at stations without ventilation
- Stored code without noticeable effect
- Likely causes
- LikelyVentilation switch control or feedback wire shorted to ground
- PossibleShorted driver stage in the charging control module
- RareCorrosion in a connector bridging the line to ground
- 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.