ok, got our new emissions OBD II computer today, it came with soem cool DTC software so i hooked up the old diesel to see what code it showed from the other day when it LIMPED...

P0746 - Pressure Control Sol. Control CKT Lo. Volt
P0401 - EGR Flow insufficient
P0404 - EGR desired open position Performance
P1093 - Fuel Rail Pressure Lo during Pwr Enrichment
U1003 - Loss of serial communication
U1000 - No Class 2 COMM ID not learned
U1016 - Serial Communication MALF.

WHAT THE HELL IS GOING ON??? My SES light was on for maybe 12 hrs. right after it Bucked during a Level 5 HIGHWAY PASS.. Went to 3rd gear until i pulled over and then the next day it wouldn't go over 2000 RPM for a while other than that NO SES, No Further PROBLEMS..

HELP:confused: :confused:

BIG

Looks like the Edge Juice has a bad connection. Redo the connectors. clear the codes and see what happens.

I scanned ti with the Edge plugged in and with it disconnected.. Got the smae codes showing..

If ti was a bad connection why woudl the truck still run???

Also what is to be made of the serious codes like the EGR, Fuel Rail, and P0746

THANKS
BIG

egr codes are from your exhaust..I had the same ones, but I have put the stock exhaust back on and no codes are present.

Did you clear the codes after removing the edge?

A "control ckt low" usually indicates a disconnected wire. The communication errors too.

From there, it gets a bit messy.

The EGR codes are probably from your exhaust. Look up "Finger Sticks" for a cure without taking off the exhaust.