Code P0430 is for Bank 2 of the engine which I think is the driver side.
Look for the O2 sensor on the downstream side of that catalytic converter.
You could change it and see if the code persists. If the check engine light
does not come on again then you made it! However, the sensor may be good and
telling the truth ie that the converter is not doing the job anymore.
Expensive replacement me thinks. In that case I would be thinking of
alternatives like downstream O2 sensor simulators. What about your local
emissions testing? Do you need to pass - an important question.
Jerry
"Cosmo" > wrote in message
...
> The check engine light on my 1998 6 cyl SOHC Sport came on the other
> day. I had it read at the local parts store and the error was PO430
> catalyst system efficiency below threshold. Checking the Haynes manual
> and searching the internet I cannot find the location of the bad O2. I
> understand that bank 2 is on the discharge side of the converter but
> what side of the truck is the O2 on. Any help would be appreciated.
>
> Many thanks
>
>
> Everett