LVFDChief

I found out the problem it was under the dash fuse box. Then I switched back to the factory computer and it started up and I have drove it for over a week now doing great. Thanks for your help everyone but I saw it on Tik Tok a mechanic had the same issue as I did and he said it was the fuse box. So I pulled mine out and I had power on the front side but not coming out the back of the fuse box. Thanks again

Thanks I will try to find one.

I have the relay jumper switches from Matco and when I jump it no crank because not getting fuel. If I spray starting fluid in it it will crank by jumping starter relay out. I wondered if anyway to tell if you are getting power to the pcm. My fuel pump is also not coming on.

I have a 2007 F250 5.4L that won't start or crank. When you turn the key on after 20 seconds the wrench symbol come up and it reads check gauges. If you turn the key to start nothing clicks and the fuel pump is not running. When I hooked up my Snap-On computer to it I got a U1900 code, a B2900 code and 2 more codes of vehicle communication network fault and ignition key in circuit fault. Any help will be appreciated I have had this truck for over 2 years and has been to several shops and still not fixed. So Thanks for any help