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
Jerry, Thanks for the response. Lexington, KY dosen't have an emissions testing requirement. I think I am going to try the O2 sensor before getting the emissions tested by a local garge or maby I will pay big bucks and let ford run diags on there equiptment. The main thing that I need to know at this point is where the sensor is located, and you have helped me with that problem. I lucked out a couple of years ago replacing the upstream Sensor on the passenger side. Many thanks for the information I will put it to good use.
Cosmo
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