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Toyota
4Runner
Trouble Codes
P Codes (Powertrain)
P0400 - P0499
P0420
How do I correct my 2000 Toyota Camry CE P0420 code?
2000 TOYOTA 4RUNNER
WHEFRS
MEMBER
3 POSTS
How do I correct my 2000 Toyota Camry CE P0420 code?
May 22, 2012 at 3:06 AM
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MHPAUTOS
✓
Experienced Mechanic
31,937 POSTS
Probably a faulty O2 sensor, check that the plug is light and pins are not corroded first.
May 22, 2012 at 3:25 AM
JESSICANN
MEMBER
3 POSTS
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 23, 2012 at 7:52 PM
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