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DTC codes / P0Cxx · Hybrid propulsion / P0CFC

P0CFCControl Pilot Charging Switch A Intermittent/Erratic

P0CFC indicates that the vehicle's charging control module has detected an intermittent or erratic signal from the control pilot charging switch, which is part of the electric vehicle supply equipment (EVSE) handshake circuit. The computer sets this code when the switch state changes unpredictably or drops out during charging, preventing a stable connection between the vehicle and the charging station.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyIntermediate
AreaHybrid propulsion

Symptoms you may notice

  • Charging session fails to start or stops unexpectedly
  • Charging indicator light flashes or shows a fault
  • Intermittent charging that works only when the cable is wiggled
  • Warning light on the dashboard (often a charging system or EV fault icon)
  • Often no symptoms besides the warning light if the glitch is brief

Common causes, most likely first

  1. Worn or damaged control pilot switch inside the charge port
  2. Frayed or broken wiring in the charge port harness
  3. Corrosion or contamination on the charge port pins
  4. Faulty EVSE (charging station) connector or cable
  5. Loose ground connection at the charge port
  6. Internal fault in the charging control module

How to diagnose and fix it

  1. Inspect the charge port and EVSE connector for debris, corrosion, or bent pins
  2. Check the control pilot circuit wiring for continuity and shorts using a multimeter
  3. Test the control pilot switch operation with a scan tool that can read live data
  4. Verify the EVSE is functioning correctly by trying a different charging station
  5. Repair or replace damaged wiring or the charge port assembly as needed
  6. Replace the charging control module if all external circuits test good

When the charge port switch is not the culprit

  • A faulty charging station can mimic a control pilot switch fault, so always test with a known-good EVSE before replacing parts.
  • Intermittent codes often stem from a loose ground connection at the charge port, which is easy to overlook during visual inspection.
  • The control pilot switch is part of the EVSE handshake, and a failure can be caused by water intrusion into the charge port, leading to corrosion.
  • Some vehicles set P0CFC when the 12-volt battery is weak, as low voltage can cause erratic switch signals.
  • The code may reappear after clearing if the underlying issue is a poor connection that only acts up under vibration or temperature changes.

Can I keep driving with P0CFC?

You can usually continue driving the vehicle, but charging may be unreliable or impossible, so avoid long trips until the fault is repaired. Do not force the charging connector or ignore the warning, as a persistent fault could leave you stranded.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

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