Mechanics

CODE 421 PROBLEM

1997 Mazda 626

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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Lanebo40
January 3, 2007.




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
Mwhitney
Jan 16, 2007.
Which cat did they replace? The one under the car in the center?

Cosmo. Mazda TEch

Tiny
Cosmo
Jan 17, 2007.