The E2 error is displayed on the CID when the weapon detects that the date/time is off on the weapon. This can occur if the battery has been left out of the device for an extended period of time or that the device has not been connected to Evidence Sync for an extended period of time.
Resolution
- Connect the CEW to Evidence Sync and allow it to update the time. This will happen automatically when the device is connected and the logs appear in Evidence Sync.