On 9/3/09 8:38 PM, in article email@example.com,
sensor or the wiring to them is bad & the cat is fine.
To answer your question - if the check-engine light doesn't bother you and
you don't have to pass a pollution check, the only impact as far as the car
is concerned is that the engine computer will be doing things to the tuning
of the engine trying to get in-spec readings from the O2 sensors.
That's what I thought. Yeah, it's the check engine light giving off
P0420 reading. I've took it to a shop and they replace dsome engine
parts (engine coil, spark plugs, etc.) and the light came back on. So
yeah, it could be the O2 sensor or the cat. The car is running fine
(so far) so I'm more incline to leave it alone.
If it is either O2 sensor or cat I just wanted to know if there's no
potential big damage besides bad fuel economy.
Aftermarket online will save you money, though the aftermarket cat
converter may not last as long. Magnaflow is a popular brand and
should run you under $250 at http://magnaflowcatalyticconverter.com/home.php
Catalytic converters tend not to be available at junkyards, due to the
precious metals used ones hold.
Are you in California? Like Tegger asked, what year and exact sub-
model is your Odyssey?
Cats are 8 years 80K except for a few select CA-market '95, '96 and '97
models. On those, the original cat is warranted for 14 years or 150K miles.
P0420 has just about zero to do with how the engine is performing and
almost 100% with how the cat is performing.
There is a TSB out on this specific vehicle (03-073). Basically, the cat is
toast and needs to be replaced. Thank your federal government's EPA for
that little nugget.
If you are NOT in California, you can get "universal fit" aftermarket cats
for about $200 at any muffler place.
If you are 100% certain the MIL illumination only has (and only ever will
have) the DTC P0420 behind it, and provided you do not have a regular
emissions test in your area, you can safely ignore this DTC and not get the
cat replaced. No damage to the engine will ensue.
Thank you. What I discovered was thie "10/100K" applied to Carol's
now sold 96 Accord and was due to a recall campaign. She also got a
free service. Recieved the letter 2 weeks after the car was serviced,
date limit was like 3 months out. But the dealership, in the interest
of contiuned use, refunded the charges.
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