check engine light


Old 07-29-10, 06:55 AM
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Join Date: May 2003
Location: texas
Posts: 52
check engine light

I have a Rodeo 2001 my check engine light is on and took it to AutoZone they were able to pull three codes{420,430,401} can any one tell me what the codes mean
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Old 07-29-10, 07:02 AM
Gunguy45's Avatar
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Join Date: Dec 2007
Location: USA
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The basic answer...according to my code reader lookup auxiliary emission controls. Now what that means specifically...I can't tell you.
Old 07-29-10, 12:33 PM
the_tow_guy's Avatar
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Join Date: Feb 2001
Location: SW Fla USA
Posts: 11,515
I got these from

TWC (three way catalyst) System Low Efficiency Bank 1

TWC System Low Efficiency Bank 2

EGR Flow Insufficient

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