so i got the code..i replaced the 02 sensor..only 2 on my exhaust one up and one down stream...and i still have the code..the truck idles alittle funny but other than that its fine..its a 03 ram 1500 hemi 5.7 2wd..what could it be guys?

 

Just out of curiosity, what brand of sensor did you put in???

 

oem denso

 

Unplug the sensor and using a voltmeter check voltage on the signal wire harness side. If voltage is present with the sensor unplugged and key on then the wire is shorted to somewhere.

 

ok..where is a short likely?..where does those wires run too?

 

Directly to Bosch. Haha. I have trust issue on the matter. What code did you get? I have heard that CAT issues can cause the same.

 

well i dont know where to start if its a short..im about to take to a shop..could it have to do anything with the fuel pressure regulater?

 

anyone have answer for me?

 

Have you by chance checked all the exh manifold bolts to see if any were broken or loose? Any cracks in the manifolds?