Control Pilot Indicator Control Circuit/Open
What it means
The control pilot indicator control circuit is open, meaning the module sees a broken or disconnected path. This indicator tells the driver or charger side about charging state, so the fault is usually a signalling problem rather than a drive problem.
Can I keep driving? Usually yes, as this mostly affects charging; get it read if charging fails. 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
- Warning lamp illuminates
- Reduced power or performance
Common causes
Most likely first
- Loose or corroded connection in the control pilot indicator control circuit
- Faulty control pilot indicator control module
- Damaged wiring harness in the control pilot indicator control circuit
- Failed control pilot indicator control switch
- Malfunctioning control pilot indicator control relay
How to diagnose & fix
Work through it in order
- Check the wiring and connectors for any visible damage or loose connections
- Inspect the Control Pilot Indicator (CPI) for any signs of wear or damage
- Clean the CPI and ensure it is properly aligned and seated
- Replace the CPI if necessary and retest the circuit functionality
Related codes
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