Powertrain, generic (extended)

P2E92 Charge Port Door B Open Request Switch Wake-Up Circuit

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P2E92 concerns cars with a second electrically opened charge door. Its open-request switch or sensor must be able to rouse sleeping control units, so besides its normal signal it drives a wake-up line, and P2E92 records that the two disagree. Porsche's Taycan campaign WLK2 shows the naming, door A at the driver and door B at the passenger side, both opened by a hand gesture over a sensor; Audi's newer models put an extra AC inlet with its own flap on the opposite side, also opened at the flap. No manufacturer documents P2E92. GM's 2011 Volt tests the A version, P0CC6: wake-up active with the switch released, or pressed without wake-up, filtered in 50 ms steps, Type B over two trips. The usual result is a door B that sometimes ignores a press.

Likely causes

Open or shorted wake-up wire between switch and control unit
Worn switch or sensor at door B giving mismatched signals
Water ingress or corrosion at the door B connector
Wake-up input of the control unit faulty

Symptoms

  • Charge door B does not open on request every time
  • Door opens only from the screen or the other side works normally
  • Increased standby drain if the line keeps waking modules

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€60–700
Time0.5–2.5 h

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

Parts involved

charge port door b request switchwiring harness

Related codes

P0CC6P2E93P2E94P2E98

References: gsi.ext.gm.com, static.nhtsa.gov, ask.porsche.com, audi.com.