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Driving with FE in mind, hard on emissions system?
Just got my first CEL @ 116K..
I hook my scanner up and it states a code 0420..
It defines that as "Catalyst system efficiency below threshold (bank 1)"
bank one meaning the upstream (first) 02 sensor?
I replaced that at around 90K and its a factory brand direct fitment..
hell, I even replaced the effeciency sensor as well (downstream o2)
Does Hypermiling = harsh on the emission equipment?
i know its just maitenance stuff possibly, but I donno, thought it mite be worth asking..
I think from the time a vehicle is purchased, theres what, an automatic
5 or 7 years warranty for emissions equipment or what?
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