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2001 Toyota MR2 Spyder Question: 0420 bad cat convert

 

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oxycon80, 1.8L 4 Cylinder, Baltimore, MD, December 28, 2011, 20:10
 Rookie

history bought car about 1.5 yrs..replaced all 3O2sensors..replaced ect sensor..bleed system...replaced bank 1 sensor 2...replace cat converter a year ago..just had problems with misfire codes 0401 or 0301 mis fire in cylinders..random..only put about 30 on that code before i got it fixed..just picked car up ..drove about 20 miles and now i got the 0420 bad cat again..any help sugeestions recommendations..agh.....

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  • Answer #1

    Dave Gomes from F & M Discount Tire and Auto Service, December 29, 2011, 08:48
     Enthusiast

    P0420 is a code for catalyst efficiency, usually requires converter replacement which can be costly.

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