Powertrain, generic

P0E68 Battery Charger Control Circuit Range/Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P0E68 is the plausibility code of the charger command line: no short or open is present, yet the charger does not react to the command in the expected way or in the expected time. Typical triggers are a charger that wakes too slowly, a voltage drop on the line that leaves the level ambiguous, or software in the two modules that disagrees. No manufacturer documents P0E68 publicly. A close analogue is Ford's P0E64 on its 2019 hybrids: once the charge wake-up line is high, the battery energy control module must report ready within 30 seconds. GM's general circuit code for the same line is P0E65. CARB requires detection of charger faults that block charging or reduce its rate. Pure wiring faults are P0E65 to P0E67; a software update is often the first step.

Likely causes

Charger and control unit software not matching
Charger responding late or not at all to the command
Excess resistance in the line distorting the signal level

Symptoms

  • Charging starts late, stops or fails intermittently
  • Charge timer or scheduled charging not working

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–800
Time0.5–3 h

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

Parts involved

battery charger control circuiton board chargerbattery energy control module

Related codes

P0E65P0E66P0E67P0E64

References: fordservicecontent.com, law.cornell.edu, gsi.ext.gm.com.