Just completed an EGR Delete on my 04 F250 6.0. As expected after starting truck up for the first time after delete threw a CEL. I figured it was only the EGR Codes but decided to pull them anyway using a scanner. After reading codes I found that besides the two EGR codes (that will be gone soon after a SCT Tune!) I also have a "P0198 Engine Oil Temperature Sensor Circuit High" I find this hard to beleive considering its about 20 degrees out right now, any suggestions?

 

Are you sure you got the oil temp sensor connector back on securely?

 

Did you use an EGR delete kit, and if so which one?

 

I took a quick look under the hood and did not notice anything, Although I'm not sure where I'm looking for this sensor, maybe I knocked it loose accidently, where in the engine compartment is the sensor?

 

Here is the link to the kit,
Cobb's Diesel Performance 6.0L Powerstroke EGR Cooler/Valve Delete Kit w/o Up-pipe

 

This picture sucks, I'll see if I can find a better one. It's kind of behind and below the oil filter housing on top of the engine. I believe it goes into the top of the oil cooler housing.

 

Second picture shown here...

Page 13: Component Locations

 

Thanks for the picture, I checked the plug (removed and reinstalled) and disconnected the batteries for a few before trying again, no more oil temp code, just the two EGR!! Thanks for the help and quick responses! Next step, SCT Tune!!