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#1: 02-05-2013, 07:05 PM
catalytic problem
Title: Junior Member
Location: Ontario
Car: 98 Sub Legacy Gt, 05 Mit Lancer Ralliart
Posts: 41
iTrader: (0)
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hey guys my 98 legacy gt sedan started to throw a catalytic code its happened twice now takes about 500 or more kms to come on tho when i clear it or remove the battery.

The first time it happened i was going over some pretty bumpy road the second time again there was some bumps. Anyone think it might be a loose O2 wire or most likely just an old cat, the car has about 276000 and had a new exhaust put on in the last year or two not sure if the cats were done tho. And it was e-tested in October 2012 and passed with no problems at all.

Still seems to drive fine and doesn't seem to effect the efficiency or performance at all.

P0420 Catalytic System Efficiency, below threshold c bank 1

I am wondering if u guys know would this be the front smaller "L" shaped cat or the longer straight second cat?

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