OBD-II code · Powertrain (generic, extended)

P2E4B Battery Charger Coupler Temperature Sensor C Circuit Range/Performance

The ECM detects a range/performance fault on the battery charger coupler temperature sensor c circuit. Reading cannot be used reliably for control.

Is it safe to drive with P2E4B?

The car may go into limp mode (reduced power). Get it diagnosed before a long trip.

Common causes

  • Most likelySensor characteristic drifted
  • PossibleSensor mounting displaced
  • Less likelySensor element aged beyond calibration window

Symptoms

  • Charge status indicator shows fault
  • Charging may not start or interrupts
  • Slower-than-expected charge rate

Repair at a glance

Difficulty
Easy
DIY friendly
Best left to a mechanic
Typical labour
0.3–2 h
Emissions test
Usually unaffected
Parts involved
Battery Charger Coupler Temp Sensor C, Wiring Harness, Bms

Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.