I threw a P0113 code a few days ago and would like to get to the bottom of it. It's a Intake Air Temperature Circuit High Input code. I have been running SD for a while now without any issues.

When I checked the IAT values on evoscan it gave me a -74.2 degrees.

Any ideas on how and what to check?

 

Are you running an IAT sensor? If so, it's likely bad...

 

I am. But even if i disconnect the iat and clear the code it comes right backeven before i turn the engine on.

 

Switch to fuel temp based and see if it goes away

 

will try. thanks

 

Well, of course it comes back if the sensor is unplugged...

 

Ohm the sensor and make sure it still has resistance. I've had multiple IAT's I've blown the element out of. You can pull the sensor and look in it and see if the elements missing, but ohming it is faster.