06 Explorer Limited

[CHOCO78]

06 Explorer with codes p0443 and p0403, and all O2 sensors show bad. EVERYTHING has been replaced several times, but the codes keep coming back. I even had the PCM checked for a short. What could it be? I see this is a prevalent issue. I do not want to junk an otherwise great vehicle for these newer pieces of crap. only things I have not replaced is the fuel neck hose (COLLAPSED) and the fuel pressure harness is bad. aNY ADVICE?

 

[BrooklynBay]

Welcome to this forum! Check the wiring on the oxygen sensors for damage since it's near the hot exhaust.

 

[Fbird]

What exactly has been replaced several time? You have an evap code and an egr code? Sounds like you have a vacuum leak somewhere.
Need alot more info to run this down?
Engine?
does it rub good?
bad?
power?
How do the 02 sensors "show bad"? not reading? reading high?, low?,.....

 

[CHOCO78]

What exactly has been replaced several time? You have an evap code and an egr code? Sounds like you have a vacuum leak somewhere.
Need alot more info to run this down?
Engine?
does it rub good?
bad?
power?
How do the 02 sensors "show bad"? not reading? reading high?, low?,.....

o2 sensors show heater circuit failure on all four. I just replaced it last week. New Purge valve, vent valve, and EGR. Running lean.