I get the same code about every other month. (low flow EGR Valve)
Yes, it does reset itself.
I usually help it along by driving a day with the tranny in "drive 2" to let the RPM's get higher.
Someday I'll get around to cleaning it.
On a recent road trip, I had both the engine light and the tranny light come on at the same time, with the tranny light blinking!!! Hard to ignor.
Scared the crap out of me, I couldn't find anything wrong. No funny noises, nothing under the hood.
Turned out, I just needed to top off the tranny oil.![]()