ritesh.noronha@gmail.com wrote in
news:1143679705.111299.55040@z34g2000cwc.googlegro ups.com:

> Hi..
>
> I have a 1998 honda accord V6. I got the Check engine light today,
> using an OBD scanner i found out the code was "P0420 - Catalytic
> emission low on Bank #1". The local repair shop tell me that i need to
> get the Catalytic convertor and the 02 sensors replaced.
>
> I have the following questions for the group.
> 1. Does the code P0420 mean that the catalytic convertor is bad?
> 2. He quoted the cost for a replacement Catalytic convertor for $550
> and O2 sensor for $138.. do these seem high?
>
> Just a few days back i had replaced the alternator in this car .. FYI..
>



There have been reports of this being caused by a cracked exhaust manifold.
The crack is just below the primary oxygen sensor, and allows air in AFTER
the sensor, which the primary sensor cannot detect.

Check for that before needlessly replacing the cat.

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TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/