Please help locate where the O2 sensor that has an error of PO430.

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

Reply to
Cosmo
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Reply to
Gerald Riggs

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

Reply to
Cosmo

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