KeysSTX

Today I just noticed my truck has the check engine light on for the first time. It is a 2005 F150 4.6L STX with 102k miles. My Edge programmer is reading "P0405 EGR Sensor A Circuit Low".

I just recently had my truck serviced where they replaced the bearings in my rear end. I also had a new EGR Valve installed (due to a rattle noise, which seemed to fix the rattle). The EGR was replaced about 3 weeks ago and the rear end a few days ago. I'm wondering if the EGR is the problem?

Has anyone had this code in the past, or know a possible solution to fix the problem?

By the way, my truck seems to run fine with the code, but I would rather fix the issue than run it and create a larger problem.

techrep

iTrader: (1)

check around what got replaced.. maybe a wire came off..

KeysSTX

I checked the wires and hoses in the area, and each one looks to be connected and in the right spot. Do you think the EGR could be faulty? It was a new EGR from Advance Auto. Like I said the truck seems to run fine, but I hate looking down and seeing the check engine light.

4x4angel

Check the hose on top of the engine going to the egr solenoid dry rotten hose. I just replace mine today . I'm getting same codes also check all the hoses that attaché to it.

KeysSTX

I checked the hoses again, and none seem to be dry rotted or disconnected.

Were you able to find a solution for your code, or do you still have it?

techrep

iTrader: (1)

Go back to Advanced and have them read the code and they will give you another EGR ...replacement...see if that works..