hey guys whats up? i just need some help with these two codes that are bothering me..P1273 and p1800.
what are they and how can i fix it myself? i know p1273 is the AF sensor but everytime i get down to check it out i cant tell which one is it or where it is located...
anyone knows when is this sensor?
are they serious issues?
I have a 04 maxima with 54100 miles and i dont know what the f... with this car...
thanks in advance

 

http://engine-codes.com/p1273_nissan.html

http://engine-codes.com/p1800_nissan.html

 

anyone else pleaseeee...this is driving me crazyyy

 

I have the same two codes popping up and am having trouble fixing it also. I have VIAS block plate and replaced o2 sensor bank 1 sensor 1. The code should be for the oxygen sensor in the exhaust manifold back side of engine (along firewall)

Both codes have been showing since before the blockplate

 

I would start with the VIAS P1800 first. That can cause both codes. Here is a pdf that might help http://www.mediafire.com/?a02bp30hfgedeis < this is of the engine control, should help.