Same thing here. I got that exact code and when the car was in for an oil change, they scanned it and put a new pump in the car. I didn't know it even had the code (Rev 1 at the time) - I had to ask what prompted them to replace the pump. I was having ZERO issues - the car was running very strong (I was on 7-29 v3 code at the time). I would have done the same thing you did; clear it and see what happens (esp. since I have the Rev 2 box now).
The only reason they put a pump in the car was because it was already sitting there. I wouldn't have brought it in for that specific code; it never threw a light or anything... Sometimes it's a lot more of a hassle than it's worth. If it didn't throw a light, the DME obviously took note but didn't care. We have the luxury of scanning codes now so we're just that more "in the know" about our cars - nobody else would have brought their car in for this (because they wouldn't have known it was even there!!)
I'd say just let it go and keep an eye on it...