"Service Engine Soon" light appeared last week. I finally broke-down and bought an inexpensive code reader. (1997 Taurus G) Codes 303 and 430 were present.

I understand the first is a cylinder 3 misfire and the other is a low O2 detection on bank 2. I've done a little research, and 303 probably caused 430.

I need some possible solutions to fix this problem. Could this only be a clogged injector or a bad/fouled spark plug?

Thanks in advance.

"Service Engine Soon" light appeared last week. I finally broke-down and bought an inexpensive code reader. (1997 Taurus G) Codes 303 and 430 were present.

I understand the first is a cylinder 3 misfire and the other is a low O2 detection on bank 2. I've done a little research, and 303 probably caused 430.

I need some possible solutions to fix this problem. Could this only be a clogged injector or a bad/fouled spark plug?

Thanks in advance.

Yes, those causes are plausible. If it's been a while since you've had a tune up then you might want to install new plugs (Motorcraft or Autolite) and wires (don't be cheap with the wires either).

Barring the plug/wire/injector, your ignition module may be going bad.