How do I correct my 2000 Toyota Camry CE P0420 code?

2000 TOYOTA 4RUNNER
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WHEFRS
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How do I correct my 2000 Toyota Camry CE P0420 code?
May 22, 2012 at 10:06 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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MHPAUTOS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
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Probably a faulty O2 sensor, check that the plug is light and pins are not corroded first.
May 22, 2012 at 10:25 AM
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JESSICANN
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Flashing the computer is needed. There is a computer update program to resolve the "false code P0420". There is a TSB for this.

Toyota dealer is the only place you can get the flash installed.
May 24, 2012 at 2:52 AM