i also had this problem at 120k km, second CAT died

Bought Berk HFC 63mm, been driving for 10k km with Berk and no CEL so far.

sound level increased very little, butt dyno minimum gain

 

Just to be sure... a non-fouler spacer is what may work? Thanks!

https://www.ebay.com/i/181847805182?chn=ps&dispItem=1

 

There are some with a little extensions that specifically prevent this code.

-- Chuck

 

I have had a Berk 63.5mm HFC on a MY03 for three years and have not experienced a CEL, no de-fouler is used either. Got one CEL on a MY06 with a Berk TP and no de-fouler only about a month after install, nothing since but now has a tune.

 

My OEM cat broke after just 90.000km (~56k miles), what's the best way to check for a rich mixture on a stock S2k?

Running rich would make the cat run a lot hotter and therefore break the substrate, right?

Spark plugs seem fine but I am certainly no expert on cars. (edit: http://imgur.com/a/12Rvr)

I've read about Long Term Fuel Trim (LTFT) via ODBII but my Torque Android App doesn't allow me to check the value

Any input much appreciated

 

what year is your s2k?

 

MY2004, the EU version (AP2 with 2.0L engine).

 

I have the same sort of issue. At first I thought the probe in the CAT snapped off again but I checked it and it's good. I removed and replaced the fuse to the CEL but after ~15 miles the CEL came back on so I bought a new o2 sensor yesterday. Maybe what I need is the spark plug spacer instead.

 

Just tried the fix with mine. Went 42mi and so far no problems. BTW, the size of the non-fouler for at least the AP1 (don't know about AP2) is 85mm.The Doorman part # is 42002 for the one without the metal gasket and 42009 for the one with the gasket.

 

died today. maybe

got a p420 code.

i heard as car became louder and then check light came on

could it be that one bolt broke or something else and i have a leak?

because cat has only 13k km


​​​​​​or maybe i'm running lean/rich because this is third cat in 133k km