Control Pilot Charging Ventilation Switch Intermittent/Erratic
What it means
The control pilot charging ventilation switch is reporting an intermittent or erratic signal, so the reading drops in and out. The switch tells the charging system whether the area needs ventilation while charging, so a fault can stop charging as a precaution.
Can I keep driving? Usually yes, since this affects charging rather than driving, but the vehicle may not charge until it is repaired. Do not open high-voltage (orange) cables or covers yourself; leave that to a trained technician.
What this part does
The control pilot circuit is a signal wire in the charging cable and socket of a plug-in hybrid or electric vehicle. It lets the car and the charging station agree on how much current is safe to draw, and confirms the connection is correct. The car's charger control module monitors it. Charging systems work at high voltage, where service is for trained people. A fault can stop charging.
Common symptoms
What you'll notice
- Battery not charging or draining quickly
- Warning light illuminate
Common causes
Most likely first
- Faulty control pilot charging ventilation switch
- Wiring issues or loose connections in the control pilot charging ventilation switch circuit
- The control pilot charging ventilation switch circuit is open or disconnected
- Malfunctioning control module
- Faulty sensors or components related to the control pilot charging ventilation system
How to diagnose & fix
Work through it in order
- Check and replace the Control Pilot Charging Ventilation Switch
- Inspect and repair any damaged or loose wiring connected to the Control Pilot Charging Ventilation Switch
- Clean or replace any clogged or damaged ventilation components related to the Control Pilot Charging Ventilation system
Related codes
Read & clear P0D04 yourself
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