P040D
 

Started my own thread. My truck has this code, limited power and not running well at all since the CE light. I know what the code means and want to try and change out the sensor. I tried looking under the truck, looking towards the up pipe / passenger side. I cannot find ANY sensors in that pipe.

Anyone have a better description of where it is or a picture of it? Thanks!

Its in the right hand up pipe going into the turbo inlet.

Found it with the aid of a flashlight. Oh boy that looks like it will be fun to get out! I sprayed it PB blaster and will try tomorrow to remove it.

good luck!

I was able to remove the old sensor today with out to much trouble. I did remove the inner fender cover. I also sprayed PB on the sensor for the last couple of days before trying to loosen it. I then heated it up with a small torch. It came loose right away. What a pain in the ass it was to disconnect the electrical connection!

I will have to wait until Tuesday to install the new one. I never made it to the Ford dealer before the weekend. :'(

Can anyone verify the part number for this sensor? I found 8C3Z-12B591-A EGR valve temperature sensor on Tasca Ford for $28. It looks like the correct one but cannot really tell with their picture.

Check snd tap the threads if needed.

So finally got the new sensor installed. I cleared the code and the truck runs great again! I took a few pictures in hoping that it will help the next guy that needs to do this.

First this is the sensor you are looking for, looking up from underneath the truck, passenger side.


https://i612.photobucket.com/albums/...ps36aa4070.jpg


Some people have said they could get to it without removing the inner wheel well, I don't see how unless you have tiny hands! The wheel well is fairly easy to remove. There are about 6 screws and 4 plastic rivets. Remove them and the wheel well can be pulled down. I just let it rest on the tire. See picture:


https://i612.photobucket.com/albums/...psb714045a.jpg


Once you have the inner wheel well removed you can easily see the sensor.


https://i612.photobucket.com/albums/...ps2f8dafe2.jpg


I sprayed PB on it for a couple of days before I tried to remove it. I then heated up for a bit with a small torch. After that it was easy to remove. Take your time unscrewing it so you do not strip out any threads.

Next remove the air box. Loosen the two clamps and disconnect the electrical connections ( there are three total ). Then simply remove the box from the engine bay.


https://i612.photobucket.com/albums/...ps1f573534.jpg


Once that is removed you can reach the sensor's electrical connector. It slides off a small plastic stand on the engine. Slide it off which will give you more room to disconnect the old sensor then disconnect it. This is the connector:


https://i612.photobucket.com/albums/...psbe6bc6a1.jpg


Here is the old and new replacement sensor:


https://i612.photobucket.com/albums/...ps22d80a33.jpg

I applied anti-seize to the threads on the new sensor. Reconnect the electrical connection and then screw the sensor in. Install air box, inner fender well in reverse order and you are good to go. I cleared the old code. Not sure if it would have gone away on it's own.

Great write up!

What size tap is needed?

The simple awnser is take the new sensor to the parts store and match it up.
There is a tsb with that info as it relates to the p040d.
Sorry I dont recall the size.

SENSOR
 

Hey Mike what size wrench was that sensor, I have the same code

I think it was a 10mm but I am not 100%.

sensor
 

Thanks Mike

Can anyone verify the part number for the sensor? Just had this happen to my 2008 today.

Thanks!