On 30 Mar 2006 07:46:50 GMT, "TeGGeR®" <tegger@tegger.c0m> wrote:

>ritesh.noronha@gmail.com wrote in
>news:1143679705.111299.55040@z34g2000cwc.googlegr oups.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.


accord cats go bad all the time in from 98 to 02. It's very common
after 80,000 miles.
Chip