First Audi A4 B5 1.8TQM Check Engine Help

[Tow3rs]

Just got my 98 A4 1.8T Quattro 5 speed. Check engine light came on 3 days after owning it, with a 105 mile round trip from work to home, figuring the owner before me cleared the codes. Its throwing P0134 and P0422 on my scanner. After looking into it I found that the P0422 is for the Main Cat below threshold and P0134 is for rear o2 sensor? Any help on how to know for sure before dumping a ton of money into it? I am new to the audi scene, Built some DSM's before this. But it seems the A4 has more than 2 o2 sensors that i can find. To me, it looks like there is a cat off the turbo with an o2 sensor on it and of course one under the car with 2 o2 sensors. Im not a retard just new to these german cars. My last car was an 01 Eclipse gs and that had a cat built into the exhaust manifold so thats why im thinking theres one after the turbo. Any info with be great.

[Arsenal2012]

Just got my 98 A4 1.8T Quattro 5 speed. Check engine light came on 3 days after owning it, with a 105 mile round trip from work to home, figuring the owner before me cleared the codes. Its throwing P0134 and P0422 on my scanner. After looking into it I found that the P0422 is for the Main Cat below threshold and P0134 is for rear o2 sensor? Any help on how to know for sure before dumping a ton of money into it? I am new to the audi scene, Built some DSM's before this. But it seems the A4 has more than 2 o2 sensors that i can find. To me, it looks like there is a cat off the turbo with an o2 sensor on it and of course one under the car with 2 o2 sensors. Im not a retard just new to these german cars. My last car was an 01 Eclipse gs and that had a cat built into the exhaust manifold so thats why im thinking theres one after the turbo. Any info with be great.

Get out the German scene, its nothing but trouble. With that being said sell me your car! :)

JK but not really, but really hope you find your answer, I have a c5 avant 2.8 and im just trolling for 1.8t manual.

Hopefully someone chimes in soon.

[Avant Nate]

P0134 is for the primary 02 sensor bank 1 sensor 1. 1.8t's have only two O2 sensors, one pre-cat, one post-cat. Replace your primary 02 sensor.

[Tow3rs]

Alright Thanks Avant Nate..... Shes not for sale....... yet haha

[Tow3rs]

Anybody in NY have a lead on a performance down pipe that will pass NYS inspection?