2003 Ford Taurus CODE P0430

2003 FORD TAURUS
126,000 MILES • 6 CYL • 2WD • AUTOMATIC
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TAIB
  • MEMBER
  • 1 POST
I pulled a P0430 code "catalytic efficiency system below threshhhold (bank 2)" on an OBDII machine.
I replaced the bank 2 O2 sensor on the upstream and that didn't work. Could it be the catalytic converter causing the loss of power if it is plugged up? I can rev it to 3500 RPM's or more on the road but it won't put it on the ground. What's the problem?
Nov 5, 2009 at 10:05 AM
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BMRFIXIT
  • ✓Experienced Mechanic
  • 19,053 POSTS
If you already replaced the o2 sensors before and after the catalytic converter
and no exhaust leak and still coming up with the same code at this point I would suspect and replace the converter it self
just make sure you are working at the correct bank
good luck
Nov 5, 2009 at 10:37 AM
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