Powertrain, generic

P0E62 Battery Charger A Enable Circuit Low

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P0E62 reports that the enable line of on-board charger A is held at a lower level than its commanded state allows, typically by a short to ground. If the module drives the line high to permit charging, the charger never sees the request. Should the line instead carry a low-active signal, a grounded wire could leave the charger permitted at all times, which is why manufacturers separate low from high. No manufacturer documents P0E62 publicly. GM's 2016 Volt and 2019 hybrid tables cover only the generic enable fault P0E61, using a hardware fault flag at 10.2 V or more, 30 failures in 40 samples and Type B. CARB requires plug-in hybrids to catch charger faults that prevent charging. A shorted enable wire can also overload the driver stage in the commanding module.

Likely causes

Enable wire chafed and shorted to ground
Enable input of the charger shorted internally
Driver stage in the commanding module faulty

Symptoms

  • Charging does not start when plugged in
  • Charging system warning

Repair estimate

DifficultyHardWorkshop job
Parts and labour€60–2,500
Time0.5–4 h

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

Parts involved

battery charger a enable circuitwiring harnesson board charger

Related codes

P0E61P0E63P0E64P2E36

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