questions about a sensor

[awdEAGLEtsi]

ok there are 2 sensors on the exhaust of a 95 talon awd tsi, one is the O2 and the other is the.....? its the fuel _____ sensor. when i got is diagnosed it was a fuel error something, bank #1, which the guy said was the fuel/air mixture sensor, which is on the exhaust and it is.........

 

[Defiant]

Both are O2 sensors. One on the O2 housing (!), another after the cat.

 

[awdEAGLEtsi]

definitely before the cat, right on the exhaust manifold...well right after. long wire goign from it. right in the front of the engine compartment.