Powertrain, generic (extended)

P2E8E Battery Charger B Charge Sequence Signal 2 Circuit High

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P2E8E concerns the second CHAdeMO sequence line, which works differently from the first: the station closes switch d2 to tie the line to ground, completing the circuit that sequence signal 1 feeds, and only then may the vehicle close its high-voltage contactors. Before that the connector has been latched and the vehicle has given charge permission. If the vehicle measures this line and finds it high at the moment d2 should be closed, the go-ahead for the contactors never arrives and the session ends just before power transfer; a high level outside a session points to a short to a supply. An open wire on pin 10 or a station whose d2 fails can look the same. No manufacturer documents P2E8E publicly. The low counterpart is P2E8F; faults on signal 1 are P2E8C/P2E8D.

Likely causes

Open wire or damaged pin 10 in the DC inlet
Fast charger switch d2 not closing
Sequence signal 2 line shorted to a supply voltage
Faulty input stage in the evaluating control unit

Symptoms

  • DC session stops after insulation test without current flowing
  • Station shows a vehicle-side error
  • AC charging still possible

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–1,500
Time0.3–4 h

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

Parts involved

battery charger b charge seq signal 2charge portwiring harness

Related codes

P2E8FP2E8CP2E8D

References: ti.com, openchargealliance.org, en.wikipedia.org.