CODE 421 PROBLEM

1997 Mazda 626

Tiny

lanebo40

January, 3, 2007 AT 7:11 PM

I have a 1997 mazda 626 mileage is 97k, i'ts giving me a code 421. Ive taken it to 2 mechanics and they have replaced the catalyts converter but it didnt solve the problem. Is there a tempature sensor in the exhaust system that I should look at.

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2 Answers

Tiny

mwhitney

January, 16, 2007 AT 8:54 PM


http://www.2carpros.com/forum/automotive_pictures/48676_78757862_1.jpg



http://www.2carpros.com/forum/automotive_pictures/48676_78757863_1.jpg



http://www.2carpros.com/forum/automotive_pictures/48676_78757864_1.jpg

Tiny

Cosmo

January, 17, 2007 AT 12:00 PM

Which cat did they replace? The one under the car in the center?

Cosmo. Mazda TEch

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