OBD-II code · Powertrain (generic)
P0CF4 Control Pilot Circuit Range/Performance
The control pilot signal (SAE J1772 / IEC 61851 charging) reports a circuit range/performance condition. EV charging handshake compromised.
Is it safe to drive with P0CF4?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPilot PWM signal drifted
- PossibleHigh-resistance contact
- Less likelySensor element aged beyond calibration window
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Control Pilot Circuit, Wiring Harness, Bms
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.