At a glance
What can fail
In cold weather, a software error may cause the DC-DC converter to shut down, stopping 12-volt battery charging. Continuing to drive with the warning light on can fully discharge the battery and disable power to the wheels.
What the fix does
Honda will mail you instructions to visit a dealer, where technicians will update the Power Converter Unit software.
Summarized — see the official notice for exact wording, dates, and contacts.