p0420 Catalyst System Efficiency Below Threshold
#1
Instructor
Thread Starter
p0420 Catalyst System Efficiency Below Threshold
dose this means i need a new cat or it might be one of my o2 sensor.
if its the cat whats the warranty on it 5 Yr 60 k / 100 000 Km now i'm at 110 xxx Kms
By the way i have a 3g Tl
if its the cat whats the warranty on it 5 Yr 60 k / 100 000 Km now i'm at 110 xxx Kms
By the way i have a 3g Tl
#3
Chapter Leader (Southern Region)
probably o2 sensor.. but if it is the cat... straight pipe ftw! Definitely check for other DTC's as Nail suggested..
#5
Former Sponsor
iTrader: (12)
I had the same code for my GS300, find out which O2 sensor is bad and then replace it. I doubt that your cats are bad, even if they are, you can pick up a used set from the private sales section cheap as there are a lot members with pre-cat deletes on their TLs and the OEM cats sitting their garages.
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#11
check acura canada as the numbers here may not be the same
the 800 number or go in person and ask the SM to look it up at the dealer
dont take anyones guess- see a written something
Nowhere is it lifetime!
Go ask
the 800 number or go in person and ask the SM to look it up at the dealer
dont take anyones guess- see a written something
Nowhere is it lifetime!
Go ask
#12
josh at Excelat has cats iirc start $100 to 300 for a racer version
all depends on your smog test laws
all depends on your smog test laws
#13
josh at Excelerate has cats iirc start $100 to 300 for a racer version
all depends on your smog test laws
all depends on your smog test laws
#15
have a muffler shop do a test on the cat for you- most do it free
they check temp and flow rate to determine if failed
The usa govt requires a form completed on every replaced cat- showing miles and type of failure,,, so shops know how to properly test them now
they check temp and flow rate to determine if failed
The usa govt requires a form completed on every replaced cat- showing miles and type of failure,,, so shops know how to properly test them now
#16
Instructor
Thread Starter
I have a dealers appointment monday, but now the light is gone ( i didnt erase it ).
and he told me if its the cat its still under warranty. 130 000 km so i'm safe thank you guys. lets see what happen monday
and he told me if its the cat its still under warranty. 130 000 km so i'm safe thank you guys. lets see what happen monday
#18
any idea what caused the problem?
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