1995 850 wagon - disg codes 453,543,545,553 - Miss in engine

[ChrisHerrington]

I am confused about these codes because the list I got from the net shows 3 tables (Fenix 5.2 System used on the 10 valve nonturbocharged 850, the Motronic 4.3 System used on the 20 valve turbocharged and the Bosch LH 3.2 System used on the 20 valve non-turbo charged). This car is a 20 valve nonturbocharged so I thought I would find the codes under the Bosch list but the diagnostic codes I got (453,543,545 and 553) are non-existent in the Bosch list. The only list that shows these codes is the Fenix 5.2 System list which is for 10 valve. The codes say "Misfire cylinder no 3, & catalytic converter damage". My question is: Since these codes were found on the wrong list, is it possible for these codes to mean something else ? Why would they not be on the Bosch list ? Symptoms are: Check engine light comes on, you can drive it 10 or 12 highway miles before the engine stumbles. Definite miss in engine. Must nurse it up for accelerating. Chris