P0CF7: Control Pilot Circuit Intermittent/Erratic
What to do
If charging keeps stopping partway through, this is the likeliest single explanation — the handshake is checked continuously, so a connection that comes and goes ends the session. Check the inlet and try a different cable; water and a slightly loose connector both produce it.
What this code means
The Control Pilot circuit is breaking up. On this circuit an intermittent has a characteristic symptom: charging that starts and then stops, sometimes repeatedly, because the handshake is checked continuously rather than only at the beginning. A charge that fails partway through the night, leaving the car far short of full, is this until proved otherwise.
What the Control Pilot is and how the handshake works are at P0CF3.
Likely causes
Start here
- Damaged charging inlet or pins · moderate
- Water ingress into connector · easy
- Fault in the external charging equipment · easy
Less common
- Corroded or loose connector · easy
- Faulty on-board charger · specialist
Symptoms
Components involved
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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