Code result
P0CF4
Control Pilot Circuit Range/Performance
Moderate severity
What it means
The control pilot signal (SAE J1772 / IEC 61851 charging) reports a circuit range/performance condition. EV charging handshake compromised.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Pilot PWM signal drifted
highOne of the most commonly reported causes for this code — check this first.
High-resistance contact
mediumA plausible cause — test and verify before replacing parts.
Sensor element aged beyond calibration window
lowLess common, but worth ruling out after the more likely causes.
Related help
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