Powertrain, generic

P0E6F Battery Charging System Precharge Contactor Control Circuit Low

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P0E6F points to the coil control line of the charging precharge contactor sitting too low, most likely shorted to ground. With a high-side driver the coil then cannot be energised, so precharge never starts; the driver itself may shut down to protect itself. No manufacturer documents P0E6F publicly. GM notes for the comparable high-side monitor of its positive charging contactor (P0D0A, 2019 hybrid tables) that it cannot detect a short to ground at all, which is why a separate low code makes sense. Mitsubishi's i-MiEV stores P0AE6 when the coil feedback of its charging contactor stays off while the module commands it on; it names wiring, the contactor and the EV-ECU as causes. P0E70 is the high counterpart, P0E6D an open coil circuit.

Likely causes

Coil control wire shorted to ground inside or near the battery
Shorted turns in the contactor coil
Driver stage switched off by its overcurrent protection

Symptoms

  • Charging does not start, contactor click missing
  • High-voltage fault message when plugging in

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€150–1,500
Time1–4 h

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

Parts involved

precharge contactorwiring harnessbms

Related codes

P0E6DP0E6EP0E70P0AE6

References: static.nhtsa.gov, gsi.ext.gm.com.