Powertrain, generic (extended)

P2E8F Battery Charger B Charge Sequence Signal 2 Circuit Low

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P2E8F reports the second CHAdeMO sequence line pulled low at a time it should be released. Because the station uses d2 to connect this line to ground as the very last step before the vehicle closes its contactors, and opens d2 first when the session ends, a line already at ground early, or still at ground once d2 is open, contradicts the sequence. A ground short in the inlet or harness, a station switch d2 that sticks closed, or a faulty input stage can be the cause. The vehicle then cannot be sure its contactor release is controlled by the station and normally refuses or aborts DC charging. No manufacturer documents P2E8F publicly; Siemens' CHAdeMO library for charging stations shows the station side, with relays d1 and d2 rated for 2 A. The high counterpart is P2E8E.

Likely causes

Sequence signal 2 line shorted to ground
Fast charger switch d2 stuck closed
Water or dirt in the DC inlet
Faulty input stage in the evaluating control unit

Symptoms

  • DC fast charging refused right after plugging in
  • Session ends with an error instead of a normal stop
  • AC charging unaffected

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

P2E8EP2E8CP2E8D

References: ti.com, cache.industry.siemens.com, openchargealliance.org.