0420 Code Question

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12-08-2006, 04:33 PM

82shark

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0420 Code Question

My 97' F150 threw a 0420 code. Is it the catalytic or possibly the O2 sensor? The mileage has dropped recently too. Any thoughts or input?
Ed

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12-08-2006, 04:45 PM

akheloce

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http://www.obd-codes.com/trouble_cod...old-bank-1.php

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12-08-2006, 05:32 PM

projectSHO89

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Lazy cat on passenger side.

Steve

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12-08-2006, 06:33 PM

Quintin

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Quote:

Originally Posted by 82shark

My 97' F150 threw a 0420 code. Is it the catalytic or possibly the O2 sensor? The mileage has dropped recently too. Any thoughts or input?
Ed

The bank 1 converter is chemically dead.

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01-28-2007, 10:34 PM

kievitk

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I just got that code and also noticed my milage went down the ****ter

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