Code 512....
Senior Member
Joined: Jul 2008
Posts: 58,557
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From: Long Beach Calimexifornia
Your confusing OBD1 (Pre-96) w/ OBD2 (96 & newer).
You're gonna spoil yourself rotten!!!
Thread Starter
Senior Member
Joined: Jun 2011
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So the 3 digit codes are with the engine off key on. The 2 digit codes will be with the engine running only?!?! With no check engine light there is still a possiblity that I have codes with the engine running? Can someone guide me through the steps you take to check the codes with the engine running?
Senior Member
Joined: Jul 2008
Posts: 58,557
Likes: 1,165
From: Long Beach Calimexifornia
So the 3 digit codes are with the engine off key on. The 2 digit codes will be with the engine running only?!?! With no check engine light there is still a possiblity that I have codes with the engine running? Can someone guide me through the steps you take to check the codes with the engine running?
Gotta do the KOEO first. W/ any active KOEO's, KOER's may not be accurate.
Read link: https://www.f150forum.com/f10/heads-...05/#post623219
Last edited by ymeski56; Sep 14, 2011 at 12:16 PM.