Failing catalytic converter code

My check engine light has come on, showing a P0420 code. The most probable
cause of this, I'm told, is a failing catalytic converter. No other codes
show up. The car is 1998 Honda Accord with 133k.

Does anyone disagree with the suggestion that I must install a new catalytic
converter? If I must, should I install an OEM or would Midas do a good job
also?

 

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Did you run 'accord' and 'p0420' thru google and see if there's any
ideas? I saw something about a recall, but you'd have to search for
yourself.

'Curly'

 

I am not eligible for the 8 year, 80k mile warranty for that.

 

You have to see if the rear 02 sensor is doing it's job. Sometimes they get
sluggish and start lying to the computer but don't set a code as bad. Other
than that, the cat is a good bet.

 

Catalytic converters are very reliable today. Any problem with it is
usually the result and not the cause. The post converter oxygen sensor
may be the one acting up. You can have the waveform inspected.

Also, before jumping out and buying a new cat make sure your oxygen
sensors are working properly and the engine is burning fuel effectively
(tune up lately?)

If you just replace the cat and not fix the source of the problem, the
converter will get damaged again.

 

id make absolutely sure it isnt the 02 sensor first. if youve been using
the correct gas, the cat should last longer than 133k miles.

 

I cleared the code twice and it has not returned. Does everyone still think
that I should test my O2 sensors?