supraholic

I checked the Nissan TSB on ECU updates. Per the manufacture date, mine did qualify for the ECU program update. In anycase, as long as I pass emission testing, who cares what the condition of the cats are...

peter314

Hi everyone,
mechanic told me that right catalytic converter need to be replaced.
$500 for part + labor/
Truck is running good with rare and minor glitches.
(noisy exhaust, once or twice strangely didn't start from the first try, started 5 seconds later).
Check Engine Light is OFF.

We don't have emission test here in Canadian Alberta - so should I go and fix it or I can wait till the part fall off? How do I know that "it's time"?
(8yrs/130K km warranty expired)/

THX!

arknavy

Do any of these cat problems apply to the 2002 SE?

ed00717085

thank god for this forum,filled with information which saved me time and money on so many different issues I've had with my 01 pathfinder. Every issue I've come across on my truck has been fixed with the research I've done on this site,including the p0420 and p0430 cat codes my ODBII was picking up.I had the upgrade software installed in the ecm at dealer and problem has gone away,even passed emissions inspection the following day ,so reprogramming ecm does work. Good luck to anybody having this issue.

ed00717085

I had these cat codes on my 01 pathfinder,Had dealer upgrade ecm software and problem went away,even passed emissions test the next day so the upgrade does work.

BernieK

Does anyone know the extent to which an ECM reflash on a 2000 Maxima widens the upstream and downstream frequency ratio? Supposedly is should be 2:1 (front:rear). The intervals at which I need to reset P0420 are becoming more frequent. The last one was about 6 weeks. Ultimately I'll probably need to replace at least one cat, but would like to put it off. The car only has 88K miles.

Thanks.

BernieK (Berniek@technicaldevelop.com)

smj999smj

Unfortunately, Nissan doesn't inform us exactly how they expanded the parameters nor under what conditions. All we know is that they developed a different ECM program for those vehicles under the TSB.