Powertrain, generic (extended)

P2EA0 Charge Port Door B Unlock Control Circuit High

Check engine lightUsually off

EmissionsNot relevant

Drive cycleNot required

Limp modeNo

P2EA0 marks the opposite case at the flap B release output: the line sits at a high voltage while the driver stage should be pulling it down or keeping it off. Contact with a 12 V circuit does this, and on low-side switched outputs an interrupted actuator or wire gives the same reading. No manufacturer documents P2EA0 publicly. GM's Volt checks the A output for a short to battery or an open line only while no release is commanded, needing 64 of 80 samples at 50 ms, and reports it within P0CD1. Tesla's latch patent explains why a permanently powered release is unwanted: the electromagnet is fed only briefly through a normally open switch to cancel the holding magnet. Audi's e-tron campaign 93H6 shows the fallback when a flap stays shut, the manual release. Low-level faults are P2E9F, the movement check P2E9E.

Likely causes

Control wire of the flap B actuator shorted to 12 V

Open actuator winding or broken wire on a low-side driven output

Output stage in the control unit stuck on

Symptoms

Flap B never releases, only the manual release helps
Actuator may run warm if powered permanently

Repair estimate

DifficultyMediumWorkshop job

Parts and labour€100–600

Time0.5–2.5 h

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

Parts involved

charge port door b unlock actuatorwiring harnesscontrol module

Related codes

P2E9D P2E9E P2E9F P0CD4

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