01' 4.7

My truck started to run rough two todays ago, then today it through code p1698. The truck starts and all gauges seem to work fine. I know the NO BUS means that there is No CCD Messages Received From PCM. Could this be a bad map sensor or CPS sensor. Has anyone had a similar problem. I am new to OBDII. What is the easiest way to narrow it down.

 

PCM is fryed most likley try doing a reset disconnect neg battery cable ect. check for codes...

OR i know there is a TSB on the ebrake teeth grinding thru a wiring harness and grounding wires out causing a NO BUS message...

 

Explain TSB on the ebrake teeth?

 

the teeth grind thru wire (s) and cause them to short out...look up there and see if that is happining

 

A few other codes to add to list...
P0308 Misfire on Cylinder 8
P1687 No Cluster Bus Message

Hope this helps

 

Well I replaced the spark plug in cylinder 8 and reset all the codes, driven over 400miles and all is good.

 

even the no bus?

 

I guess that was just a burp in the computer scan.....don't know just one of those things I guess