P2E52 code meaning
Battery Charger Coupler Temperature Sensor D Circuit High
What P2E52 means
P2E52 is the mirror case of P2E51: the sensor D input sits above its valid band, usually because of an interrupted sensor lead, a connector that has backed out, or a short to a supply line. Volex quotes for its NACS inlet NTC thermistors with an operating range of -40 to +125 °C; an open NTC loop looks like a contact colder than that range, which hides any real heating. With a PT1000 an open loop looks like a hot pin and stops charging at once. Only Ford is known to read a sensor D, as its bulletin on overheating code P2E53 shows, but it gives no thresholds or details for P2E52. CARB asks for circuit checks on input components and, on plug-in hybrids, for detection of charger faults that stop or slow charging. Real overheating at point D is P2E53.
P2E52 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 P2E52
- DC fast charging does not start or stops at once
- Charging warning message
- Inlet temperature reading fixed at an extreme value
Common causes of P2E52
- Most likelySensor D lead broken or connector backed out
- PossibleSignal wire shorted to a supply line
- PossibleTemperature element D open inside the inlet
- Less likelyMeasuring input of the evaluating module 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 P2E52 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 52 | The exact fault in that area. |
What to do next
- Note P2E52 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 P2E52
What does P2E52 mean?
P2E52 means "Battery Charger Coupler Temperature Sensor D Circuit High". P2E52 is the mirror case of P2E51: the sensor D input sits above its valid band, usually because of an interrupted sensor lead, a connector that has backed out, or a short to a supply line. It is a generic code, so it means the same on every make.
Is it safe to drive with P2E52?
P2E52 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will P2E52 fail an emissions test?
P2E52 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 P2E52 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P2E52 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.