Powertrain, generic

P0EE8 Battery Charger Coupler Temperature Sensor B Circuit Range/Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleRequired
Limp modeNo

P0EE8 is set when sensor B in the charging inlet delivers an electrically valid value that does not fit the situation. A plausibility test may compare it with sensor A on the neighbouring pin, with the outside temperature after a long rest, or with the heating expected for the charge current. If B reads far colder than A during a high-current session, or shows a sudden rise without current, it fails. No manufacturer documents P0EE8 publicly. GM gives a hint for the A sensor equivalent P0D9A on the 2022 Hummer EV and BrightDrop EV600: worn or oversized terminals in public charge plugs are a suspect, and the test only runs again after about ten minutes of driving above 2 mph (PIT5904). Inlets with two DC pin sensors, as Sailtran builds them, make such a cross-check possible.

Likely causes

Worn station plug heating one contact unevenly
Drifting sensor element B
Sensor B lost thermal contact to its pin

Symptoms

  • Charging reduced or aborted
  • Fault only at certain stations

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–1,200
Time0.3–3 h

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

Parts involved

charge port temperature sensorcharge porton board charger

Related codes

P0EE7P0EE9P0EEAP0EEBP0D9AP0EEE

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