This sounds like a regulator fault. I sell these alternators daily, and we cannot get the regulator as a spare part (well, not here in NZ, anyway).
The alternator has a feedback terminal to the ECU. If it does it again, give the alternator connector a clean and see if it goes away. If it does, the issue is a loose connection. If it doesn't, then the issue is internal and you're up for a new unit.
The reason the other lights come on, is that the ECU recognizes that these items may fail if the battery is not fully charged. As the report is not coming back from the alternator to say that it is charged, the ECU flags a fault on those items as well.
Of course, the above assumes that the battery is in good condition. As the car is less than a year old, it would be pretty odd if the battery is faulty.
A proper load test and off-vehicle charge should clear the battery of guilt.
When should you swap the regulator versus swapping the entire alternator?
When you know what has damaged the regulator in the first place and it has been fixed. If, for instance, the rotor has a short circuit and is drawing too high a current, the new regulator will fail also.
When it is a major job to extract the alternator for repair. If it's a 3 hour workshop job to get the unit out, you don't want to do that twice. I believe the Honda is not that hard, so it's really a call to be made from your wallet ;)
