the check engine light came on today while driving back from work.
stopped at advance auto, these codes were showing.

he didnt know what the 1519 meant, said go to dealer


any ideas? driving didnt really change, car still the same

 

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P1519 is a Camshaft adjustment, bank 1, malfunction

i think P4021 is a catalytic converter code (not sure which side)

don't know what the fix is for either, but a search might help

got my timing belt kit from ECS and have zero complaints. A lot of the A4 guys are getting the kits from FCPGroton now and reporting excellent results as well. the lightweight pulley kit really isn't going to do anything for you (imho)

 

P0421- put spacers on the o2 sensors before preceding with cat replacement. Spacers should you $20 Or 5 dollars at autozone if you want to do the sparkplug non fouler trick. But that requires drilling.

Do report back if the spacers help.

 

What spacers? Like a thicker gasket?
Sorry not so familiar with German cars. Drilling what exactly?

 

The spacer is like adding an extension onto the o2 sensor. it makes it about an inch away further from the cat, and will not be as sensitive.

 

I did the non fouler method about a year ago and it worked great.

 

So what size of spacers should one get on our cars? And what size of drill bit was used? 1\2? My 2.8 is throwing intermittent codes for both banks now. Fml.

 

What is the fouler method? Amy write ups?

 

I don't have a write up for the non fouler method but here is what I did. I went to advance and bought the spark plug non foulers. Because the 02 sensor was too big for the bottom part of the non fouler (NF) I took a dremel and cut the bottoms off of two. I then used jb weld to line up and "glue" two of the cut NF's. That will give you one NF 02 holder. You'll want to make sure that you line up the outside pattern to make it easier to screw in later.
Hope this helps.