I have a 2011 f150 5.0 that had this code come up. I need some help locating this sensor and how to replace it.

 

Maybe reset it and see if it comes on again.

 

Already tried that. It didn't work. As soon as I start it engine overtemp comes up on the display and the fans run really fast. So I'm guessing I have a bad sensor.

 

You might have a bad sensor, a wiring concern, or a PCM concern. The fault code is there to point you in the direction needed, it is NOT a diagnosis of a bad part. You still have to do your diagnostics to pinpoint the fault. Otherwise, you'll be back with the common line of "I had a fault code so I replaced the sensor but I still have the fault code. What do I do now?" The answer is that you have to do now what you should have done before replacing the part, the rest of the diagnostic work only now you've wasted money on an unneeded part.

 

Never truer words been written or spoken. And it is true for EVERY code.


I have no particular experience with a 2011. But having some experience with the CHT on my 2004 I found your question of interest and went looking...


Found this post that might help.


https://www.f150online.com/forums/20...r-problem.html


Seems like their P1289 code resulted simply from a connector knocked off the CHT. Hope yours is as simple.

 

On my 2010 5.4L F150 the CHt is under the intake on the passenger side head. I received code P1289, changed the sensor, and still got the code P1289 again. A couple years ago a squirrel bit my injector harness to the #2 cylinder and cut it completely in half. So, I pulled the intake and sure enough the pigtail for the CHT sensor had been bit off. A big chunk of it.

5.0s have the CHT on the back of the head from what my searches have turned up.


CHT pigtail bit by squirrels. See the section they cut out laying in the valley in the background.