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1999 Toyota 4Runner Check Engine Light

Tiny
STEVE21787
  • MEMBER
  • 1999 TOYOTA 4RUNNER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 82,000 MILES
The check engine light recently came on on my 1999 4Runner. I just had the front O2 sensor replaced. Can you give me any indication as to what the problem is now? I have an appointment at a dealer to diagnose the problem but am afraid they are going to tell it is the catalytic converter which I know costs around $1000 dollars. If it is the converter do you see a problem with replacing it with an aftermarket model which I see advertised for about half as much?
Thank you very much,
Steve
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Monday, February 11th, 2008 AT 9:08 AM

3 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Go to Autozone they will read the codes for free, do this before your trip to the dealer. Post resulting code(s) here.
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Monday, February 11th, 2008 AT 9:15 AM
Tiny
STEVE21787
  • MEMBER
  • 2 POSTS
AutoZone read code as P0420 Catalytic Converter Efficiency Below threshold Bank 1
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Friday, February 15th, 2008 AT 2:01 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Yep the converter is probably "dead" and needs replacement, an aftermarket will work OK.
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Saturday, February 16th, 2008 AT 8:50 AM

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