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PCM 0089 high rail pressure?

959 views 3 replies 2 participants last post by  suttert 
#1 ·
went out to warm up the truck at 10 degrees and when i came back out my cel was on with this code... truck drove fine... thoughts from the pros?
 
#2 ·
I'm no pro, but I had the same code along with a bunch of other ones when I had a little gelling issue. I had high rail pressure, an overboost code, a Map sensor code. All was well once I got the truck in the garage and warmed it up. I don't know if this is your issue, but it's an idea.


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#3 ·
its possible that i wasnt warm i guess. i dont run an additive, but then again it was only 10 degrees and the fuel i get is pretty good, so im doubting it. but i do appreciate your response! anybody else?
 
#4 ·
Update: went to lunch, code was gone and it wasn't even stored...strange

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