Lewis,
I purchased my HAH from David McDavid Honda (Frisco Tx) in Jan. I just mention that because I noticed your daily to commute to the DFW area and don't know if there is a connection for our cars as I also had the check engine light come on after a Mavericks game mid May.
I drove the car home without incident, but I too noticed that the Eco light did not come on, although the green and blue bars did. Auto stop also appeared to work. I was watching the trip computer and did not notice anything different.

As the first HAH with a problem at the dealership, the cable that connects the car to the diagnostic machine was cut - so I had to wait until the next day for them to have that part FedExed. They were finally able to hook the car up to the machine and did not find anything wrong. This prompted a call to the Tech Line (REF 1575182-Larry) who told them to clear the codes, load test the battery. They performed the test and all checked OK.
Then the Tech Line (expert Larry) told them to "perform a motor rotater position switch calibration" (I think they changed the factory specs to new spec which I believe are .123505 .6 118099 1.0).

Whatever they did, I guess worked as I have not had the problem reoccur, but it has been less than a month, so we will see.
I was really bummed because I had just returned from a trip from Austin where I had a terrific south wind and my instant mpg was around 37 mpg. They test drove it for 4 miles (probably floored it the entire time) which ended up dropping my mileage to 27 mpg.

Oh well.