Powertrain, generic (extended)

P2E9A Charge Port Door B Position Sensor Circuit Low

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P2E9A reports that the flap B position signal has fallen under its lowest valid value. A signal wire chafed against ground, water in the connector or an internally shorted sensor are the usual reasons. Tesla's latch patent shows a common build in which a reed or Hall element inside the latch senses a magnet disc on the door, so the signal follows the gap between them. No manufacturer documents P2E9A publicly. For the A flap of the 2011 Volt, GM sets P0CCE as Type B when 6 out of 8 readings fall under 22.9 percent, and while a position code is active it holds back the control pilot test P0CF4 and the opening check P0CD2. P2E9B is the high counterpart, P2E98 the general circuit code. Expect a flap state that never changes and possibly blocked charging.

Likely causes

Position signal wire of flap B shorted to ground
Water in the sensor connector at flap B
Position sensor failed short internally

Symptoms

  • Flap B status in the display does not change
  • Charging blocked or charging flap warning

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–500
Time0.5–2.5 h

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

Parts involved

charge port door b position sensorwiring harnesscontrol module

Related codes

P2E98P2E99P2E9BP2E9CP0CCE

References: gsi.ext.gm.com, image-ppubs.uspto.gov, static.nhtsa.gov.