OBD-II code · Powertrain (generic)
P0CF9 Control Pilot Charging Switch A Range/Performance
The control pilot charging switch A reports a range/performance condition. SAE J1772 charging signal handshake may be compromised.
Is it safe to drive with P0CF9?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySwitch contacts aged
- 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 Switch A, Wiring Harness, Bms
Related codes
- P2DCFControl Pilot Charging Switch B Range/Performance
- P0CF6Control Pilot Circuit High
- P0CF7Control Pilot Circuit Intermittent/Erratic
- P0CF8Control Pilot Charging Switch A Circuit/Open
- P0CFAControl Pilot Charging Switch A Circuit Low
- P0CFBControl Pilot Charging Switch A Circuit High
- P0CFCControl Pilot Charging Switch A Intermittent/Erratic
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.