P0CFC

What it means

P0CFC means the vehicle's charging control module saw the control pilot charging switch 'A' circuit or signal behaving intermittently or erratically. The control pilot is the signal line between the charge point and the vehicle that sets up and supervises charging. The module saw the switch state or signal drop out, jump or give implausible readings while the car was connected or preparing to charge. The exact switch and circuit layout depend on the model.

Symptoms

• Charging starts and then stops without warning
• Charging will not start at some charge points but works at others
• Charge port light or dashboard charging indicator flickers or shows a fault
• Warning light or message about the charging system
• Reduced charge rate or an incomplete charge
• Fault appears and clears at random

Possible causes

• Dirty, damaged, corroded or worn pins or contacts in the charge inlet, including the control pilot pinlikely
• Faulty or damaged charge cable or charge point (supply equipment) giving an unstable control pilot signallikely
• Wiring fault or poor connector contact (chafing, water ingress, loose terminal) in the control pilot or switch circuitlikely
• Faulty charge port switch, latch or lock sensor feeding an erratic signalpossible
• Fault inside the on-board charger or charging control modulepossible
• Low 12 V battery voltage or poor earth causing unstable module readingspossible
• Outdated control module software where the manufacturer has issued a fix for this faultrare

How to diagnose

1. Read all stored codes and freeze frame data, noting when the fault set and whether charging was in progress, then check for other charging, communication or low-voltage codes
2. Ask which charge points and cables were in use, and try a different known-good charge point and cable to separate vehicle faults from supply faults
3. Inspect the charge inlet and cable plug for debris, moisture, heat marks, bent or corroded pins and a damaged seal or flap
4. Check the 12 V battery condition and charging voltage, as low voltage can cause erratic signals
5. Inspect the wiring and connectors between the charge port and the charging control module for chafing, water ingress and loose pins, and wiggle-test while monitoring live data
6. Monitor the charge port switch and control pilot status in live data during a charge attempt and look for dropouts or spikes
7. Check the charge port latch or lock operation and its feedback signal
8. Check for manufacturer service bulletins or software updates for this code on the specific model; high-voltage components must only be tested by a suitably trained technician

How to fix

• Clean or replace the charge inlet if the pins or contacts are damaged or corroded
• Replace or repair a faulty charge cable, or avoid the faulty charge point and report it to its operator
• Repair wiring or connectors in the control pilot or switch circuit and seal out any moisture
• Replace the faulty charge port switch, latch or sensor
• Replace or repair the charging control module or on-board charger if testing confirms an internal fault
• Update the control module software only where the manufacturer lists it as a fix for this fault

Can I keep driving?

Nearby codes

• P0CFBGenericControl Pilot Charging Switch A Circuit High
• P0CFDGenericControl Pilot Charging Switch A Stuck Off