I have a new problem and think I may have found the answer here
I cant get any koer codes only a solid light on my code scanner. I can pull koeo codes. They are as follows 654 mlps not indicating park during koeo self test, 553 thermactor diverter circuit failure(unhooked) and thermactor bypass circuit failure (unhooked). After the seperator I got 332 egr flow insufficient, 452 vss signal too low and finally 634 mlps signal voltage higher or lower than expected. now my question would the 654 and 634 codes cause me not to be able to run the koer self test I believe the mlps codes are due to I have been playing with it because my e4od is funky when I put it in d/od it is in neutral slap the shifter nearly to 2nd and wa-la you got drive. I have adjusted it to no avail from one end to the other and everything in between and probably forgot to set it properly when I finally got pissed off enough to say the hell with it. My battery voltage is 12.35 charging voltage is 13.84. would that be my problem and obvisoly I need to check the mlps and adjudst it if it isnt where it should be. Is there anything else I should check before chasing wires?for the no KOER problem; Read this; Scan Tool Won’t Initiate Self-Tests Troubleshooting in EEC-IV; SIG-RTN, Self-Test Output circuit, etc.
Source: by Ryan M (Fireguy50) at fordfuelinjection.com
As JK mentioned; check Battery and batty voltage.
Scan Tool Won’t Initiate Self-Test Due to Poor Grounds, Corroded Wiring, etc.; read more on how to Ground the STI & Proceed w/ Test
Source: by Jeremy M (Big 92, jermil01) at SuperMotors.net