I have a '99 SR5 v6 with 102,000 miles and getting the P0420 CEL. I scanned it and it was "low efficiency bank 1." The dealer said I needed two new cats since I have a Cali truck ($2,600 total). I cleared the light twice and it came back on within 60 miles both times. I guess my question is do I need new sensors or cats? I do live in Louisiana, and they dont require emissions tests so should I just ignore the light, or will that hurt my truck in the long run?
P0420 Light on '99 SR5
- Thread starter mcolliga
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01t4rnr
New member
it wont hurt anything to leave it but someone is smoking crack to tell you $2600 to replace the cats and sensors. Its not cheap but you could do it for around $500 im sure. I personally would leave it alone and keep that money for something else . Hell i had a code for charcoal canister sensor but it was close to $400 so i unplugged the bulb to the check engine light:satan: I know , i know some of you guys prob. wouldnt but its not hurting anything to leave it - out of sight out of mind
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shootmymime
New member
you dont need a cat, just replace your 1st o2 sensor, its about 30-50 bucks! if your need any write ups let me know or someone else should give you some info on it
shootmymime
New member
here is the link, dont pay any attention to the oil presure sending unit
i will fix the photos after dinner
http://toyota-4runner.org/showthread.php?s=&threadid=40007&highlight=oxygen
i will fix the photos after dinner
http://toyota-4runner.org/showthread.php?s=&threadid=40007&highlight=oxygen
