E14
Nissan Internal Real-Time Clock / Scheduler Error

Nissan charger shows E14; scheduled charging or smart charging features fail.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

RTC battery failure on control board, Corrupted time settings due to power loss, Firmware bug affecting scheduler, Faulty memory on Nissan EVSE control board

How to Fix / Troubleshooting

Safety first: Turn OFF power before opening the EVSE if internal inspection is needed.

  • Reset time settings: Using the Nissan charger app or front panel (if equipped), reconfigure the date, time, and schedule. Save and reboot the unit.
  • Power-cycle: Turn the breaker OFF for 2 minutes, then ON. Re-enter schedule settings.
  • Check for firmware updates: Use the app or contact Nissan support to see if a firmware update addresses known RTC issues.
  • Board inspection (advanced): If accessible, inspect the control board for a small coin-cell battery used for RTC backup. If it is removable and specified as user-replaceable, replace with the exact type.

If E14 continues and scheduling is critical, the control board may require replacement by an authorized service provider.

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Repair Difficulty

Medium 3/5

Required Part

Nissan EVSE Control Board (RTC Circuit)
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