P1211 weird one....

[tgarrisoniv]

hey guys,

I was involved in a wreck this morning, rearended a small car. & yep it was my fault (( but it didn't do anything to my truck except make the check engine soon light come on. I drove off from the scene of the wreck and got to a gas station and hooked up the scanner to find P1211... now i've heard of this code coming up alot under hard excel or with no cranking conditions. mine still runs perfectly fine, just wondering if maybe the impact could have done something?? seems odd to me why that would make this code come up.
It is a L99 with 205k, stage 1 sticks, 6637 intake, stock hpop, stock turbo, fuel x-over, walbro pump, TW 6-pos chip, icp is has about 10k miles on it and ipr has about 1k miles on it. thanks for any help!!