Hey guys,

I have a 2000 Eddie Bauer Expidition with the 5.4. I ran my code reader and it popped up a P0156 code, meaning O2 sensor (bank 2 sensor 2). I am unsure which O2 sensor that is. How many O2 sensors on this beast (tried to decipher info on a search but with dial up it sucks) and would it be better to replace all of them? It has 75,000+ on it.

The gas mileage did drop about 4mpg and not running as smooth.

Thanks in advance.

Aaron
Nappers