Hello everyone,
I have an audi s4 01 and jsut recently the car has been driving wierd when i hit the gas it feels like its sputtering and does not move as it should its like a lag, also a couple of days it ago it would just completely turn off, I got codes for it, I have no clue what any of it means , I will very much appreciate any help I can get thanks...

p0421 - warm up catalyst, below threshold
p1127- Long term fuel trim bank 1
p1129- long term fuel bank 2
p0103- MAF or VAF circuit high input

Sounds like a MAF problem... and a primary o2 problem... I think anyways.

Josh

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Do you have any rough estimate on how much the part would be?