P2E4F code meaning
Battery Charger Coupler Temperature Sensor D Circuit
What P2E4F means
P2E4F is the general circuit fault of the fourth inlet temperature sensor, used when the wiring is clearly wrong but not classed as low, high or implausible; the D row has no intermittent code either. Ford is the one maker whose public papers show a sensor D in use: SSM 55080 names P2E53, the overheating verdict for point D, stored in the secondary OBD module (SOBDM) of the Mustang Mach-E, E-Transit and F-150 Lightning, so that module reads sensor D. Ford does not publish P2E4F or say which pin D watches. A fourth point makes sense because, as TE patent US11329436 puts it, each DC contact above 200 A needs its own monitoring and a 90 °C contact must be reported within 30 s. On the smart with 22 kW charger, Mercedes traced inlet sensor codes to loose low-voltage plugs at the charger (LI54.10-P-067823).
P2E4F at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2E4F
- DC fast charging refused or limited
- Charging warning in the cluster
- Fault may only show with a warm or cold inlet
Common causes of P2E4F
- Most likelyLow-voltage connector between inlet harness and evaluating module loose (smart for sensor A)
- PossibleSensor D wiring chafed or broken
- PossibleTemperature element D failed (normally replaced with the inlet)
- Less likelyMeasuring input in the SOBDM or charger defective
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Charge port temperature sensorWiring harnessOn board charger
What each part of P2E4F means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 4F | The exact fault in that area. |
What to do next
- Note P2E4F 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 P2E4F
What does P2E4F mean?
P2E4F means "Battery Charger Coupler Temperature Sensor D Circuit". P2E4F is the general circuit fault of the fourth inlet temperature sensor, used when the wiring is clearly wrong but not classed as low, high or implausible; the D row has no intermittent code either. It is a generic code, so it means the same on every make.
Is it safe to drive with P2E4F?
P2E4F does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will P2E4F fail an emissions test?
P2E4F 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 P2E4F to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P2E4F clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.