P0CFE code meaning
Control Pilot Charging Switch A Stuck On
What P0CFE means
Stuck On describes a charging switch A that stays closed while the module wants it open, so the pilot keeps signalling a charge request. Mercedes-Benz documents P0CFE00 in the AC charger N83, whose fault text states that the charger’s internal charge-start switch does not open. A 2023 bulletin for models 206, 223 and 243 reports it after charging has finished or at the start of a timed-charging pause, only with pre-entry climate control active, together with a charging error message in the cluster; NHTSA's index lists the same bulletin for many Mercedes plug-in and electric models up to 2026. The cause there is software, cured by SCN coding, and the bulletin advises against replacing parts. Its counterpart is P0CFD, circuit faults are P0CF8 to P0CFB. Charging may not end properly or is aborted.
P0CFE at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor0.5 to 1.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0CFE
- Charging error message in the instrument cluster after charging
- Charging aborts at home socket, wallbox or public station
- Fault appears mainly with pre-entry climate control active (Mercedes-Benz)
Common causes of P0CFE
- Most likelyOn-board charger software, cured by SCN coding (Mercedes-Benz N83)
- Less likelyCharging switch or relay contacts sticking closed
- Less likelyControl line fault holding the switch permanently on
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Control pilot switch aWiring harnessOn board charger
What each part of P0CFE means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| C | Area: hybrid propulsion. |
| FE | The exact fault in that area. |
What to do next
- Note P0CFE and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0CFE
What does P0CFE mean?
P0CFE means "Control Pilot Charging Switch A Stuck On". Stuck On describes a charging switch A that stays closed while the module wants it open, so the pilot keeps signalling a charge request. It is a generic code, so it means the same on every make.
Is it safe to drive with P0CFE?
P0CFE does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will P0CFE fail an emissions test?
P0CFE is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P0CFE to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 1.5 hours of work. This is a job for a workshop.
Will P0CFE clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.