vag com codes help

[NAB_ARCK_86]

I keep getting 16804 and 00283 coming up its doing my head in any advise guys and girls

 

[Big_daddy]

16804

http://wiki.ross-tech.com/wiki/index.php/16804/P0420/001056

You get this if you have a decat.


00283

http://wiki.ross-tech.com/wiki/index.php/00283

check front left abs sensor

 

[NAB_ARCK_86]

thats the thing i havent got a decat, it was decatted i had a sports cat put in and the 02 sensor changed it was all ok thats what i dont get its puzzling me big time i took it to the powerflow guys and they checked it over and was abit baffled no leaks CAT is fine emmisions fine o2 senors bank 1 is fine bank 2 is new and fine