1 owner 2004 v-10 6.8 140,000 miles

Traded for replacing exhaust manifold bolts and picked up the truck, asked to check for codes and misfires, NO CEL,

cold start codes popped up all "out of sensor range"
P1780 Transmission
P1288 Cylinder Head Temp
P1127 O2 Sensor Downstream

I'm thinking not to be concerned especially since the O2 sensor is about 7 months old.

My thoughts, truck wasn't warm enough for the sensors to read any info

What are your thoughts??

 

BTW don't click on Transmission, that's an AD for JEEP, not sure why?

 

I would start by taking a very close look at the wiring, make sure everything is plugged in.

 

Thanks Redford, I'll give that a shot.