Powertrain, generic (extended)

P2E8A Proximity Detection Circuit B High

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P2E8A is the opposite of P2E89: the proximity line of circuit B sits above the accepted band. Because the evaluating controller usually pulls the pin up to a reference such as 5 V, as described for Watt & Well's EVCC, an open wire or a missing earth path reads high just like a short to a supply. For circuit A GM's Volt sets P0D59 above 4.8 V under the same conditions as the low test, charge door closed or moving out of Park, again Type A with MIL. Mitsubishi's 2023 Outlander PHEV logs P0D59-00 on a high charger connection signal and points to the harness between charger and PHEV-ECU or the PHEV-ECU itself. No manufacturer documents P2E8A. The usual result is a plug on inlet B that is never recognised, so charging there does not start.

Likely causes

Broken proximity wire or unplugged connector at inlet B
Missing protective-earth path in inlet or cable
Proximity line shorted to a supply voltage
Evaluating control unit faulty

Symptoms

  • Charging cable on inlet B is not detected
  • Charging does not start on that inlet
  • Warning lamp, depending on manufacturer the MIL

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–1,000
Time0.5–3 h

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

Parts involved

proximity detection bcharge inlet bwiring harness

Related codes

P2E87P2E88P2E89P2E8BP0D59

References: gsi.ext.gm.com, gsi.ext.gm.com, mitsubishitechinfo.com, wattandwell.com.