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420 code over the winter
Posted 11 January 2006 - 01:46 PM
Here's the story: 2000 2.5RS with 122k miles. Last winter the code for the 420 catalytic convertor came up. I cleared it, erased it and ignored it. It came back on. I'm a grad student, the part costs about $500, so I continued to ignore it. Well it goes off after a while (I think it's 40 warmup cycles without an error) and it doesn't come back. I make sure there are no codes and I take it in to have it inspected and emissions tested and it is all OK.
So I haven't worried about it since, and of course it came back on a couple of days ago. I'm probably not going to fix it any time soon, I'm just curious if anyone has any ideas why it appears now? I'm also putting this here if anyone else gets this light (from looking at the board they seem to pop up about now) they can try to ignore it and hope it disappears over summer.
I've got a couple of theories, that might work
First, the cold weather, something might mess it up.
Second, the winter additives they put in fuel (I'm in PA, so it's cold here).
Third, carrying me after Christmas when I'm a little fatter.
Fourth, I might just be a lucky bastard.
Posted 11 January 2006 - 01:54 PM
Posted 13 January 2006 - 03:37 PM
I have a 2000 (its a 2.2L though) and i kept getting the P0420 code...
Just curious where do you get your gas? im wondering if maybe a suplier here is suspect.
Anyway see my thread about the PO420 code for what i had done. i dont know if it worked yet though.
Posted 13 January 2006 - 05:16 PM
My cars a silver 2 door coupe if you've seen it around.
My gas usually comes from the Sheetz up near Walmart, the Unimart on Atherton where it meets Pugh or a Turkey Hill down in Carlisle.
The only thing is I tend to get it from the same places all year. Whereas the code is only winter.
If I had a scantool I could clear it more reguarly and test it. As it is the nearest place to get it done for free is at the Autozone in huntington.
Posted 13 January 2006 - 05:44 PM
Posted 17 January 2006 - 08:21 AM
I see a lot of Subys here. is yours the silver WRX with the nice Cat-Back system? Every time i see that it sounds really great. nice low tone not like all those imprt tuners who cars sound like weed wackers.
I drive the green imprezza outback. Mine is one of two in town that has the hood scoop and spoilers.
See you around.
P.S. I am getting my cats replaced today under the warranty because of the Po420 code.
Posted 18 January 2006 - 02:12 PM
The code disappeared, so whatever caused this Catalytic converter light must have been a once off. I'm thinking the CC must be close and it's just random stuff (like water bouncing up to it) that must be giving it grief.
Posted 19 January 2006 - 08:17 AM
The guy im talking about it is a WRX newer body style. I also saw an STI yesterday, blue (because 99% of them are) but this guy put the old school double racing stripes over the top.
Well best of luck. maybe I'll see you around some time.
Posted 19 January 2006 - 03:51 PM
There is a belief that the ECU is too sensitive on setting this code.
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