multiple DTC's , can't figure it out.
So my truck recently thew a couple codes and I'm not sure where to start. It's a '00 7.3 excursion.
the codes are:
P1670 -EF Feedback Signal Not Detected
p1211 -ICP Not Controllable - Pressure Above/Below Desired
p0673 -Glow plug #3 circuit failure
It threw all of them at the same time. Truck still runs and drives fine. occasionally on a cold-start it'll idle like it's not firing on all cylinders n make no power which is what i suspect is a reason for the codes. then after about a minute it'll run great.
Now, can anyone direct me to exactly what to test/look at?