Powertrain, generic

P0EEB Battery Charger Coupler Temperature Sensor B Circuit Intermittent/Erratic

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P0EEB catches a sensor B signal from the charging inlet that jumps or drops out for moments. A metal contact and its plastic housing have real thermal mass, so a change of many degrees within milliseconds cannot be a true temperature and points to the circuit. No manufacturer documents P0EEB publicly. A Mercedes bulletin about the first inlet sensor of the third-generation smart with its optional 22 kW unit fits the pattern: inlet sensor codes there came from loose low-voltage contacts at the charger, the fix was to work the plugs gently and watch whether charging starts, and the bulletin warns the fault may only appear with warm or cold parts at the start or end of charging. Typical for P0EEB is a session that stops without visible reason and works next time. Steady faults are P0EE9 and P0EEA.

Likely causes

Loose contact in the sensor B circuit or at the charger plug
Moisture that comes and goes in the inlet connector
Cracked sensor element with temperature-dependent contact

Symptoms

  • Charging stops sporadically
  • Fault cannot be reproduced at once

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–1,200
Time0.5–4 h

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

Parts involved

charge port temperature sensorcharge portwiring harnesson board charger

Related codes

P0EE7P0EE8P0EE9P0EEAP0D9D

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