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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?
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?
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.
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!!