Powertrain, generic (extended)

P2E52 Battery Charger Coupler Temperature Sensor D Circuit High

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

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.

Likely causes

Sensor D lead broken or connector backed out
Signal wire shorted to a supply line
Temperature element D open inside the inlet
Measuring input of the evaluating module defective

Symptoms

  • DC fast charging does not start or stops at once
  • Charging warning message
  • Inlet temperature reading fixed at an extreme value

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–1,500
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

charge port temperature sensorwiring harnesson board charger

Related codes

P2E4FP2E50P2E51P2E53P2E4DP0EEA

References: volex.com, static.nhtsa.gov, law.cornell.edu.