2000 Toyota Corolla Q&A

2000 Toyota Corolla Question: code po420

how to check to make sure cat. converter is bad -
Answer 1
Typically you will have a Check Engine Code P0420 or it will rattle, especially in the morning. The code P0420 is common for the 1.8 lire Corollas. see the link below. http://repairpal.com/OBD-Code-P0420 -
Answer 2
check back pressure with gauge -
Answer 3
how can i check to see that the cat converter is not bad? -
Answer 4
I have problem on codep0420 -
Comment 1
check for p0420 TSB! get toyota to reprogram it. they'll charge ~$100 but cheaper than replacing the Cat. -
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The check engine light is on. These are the trouble codes: PO420, PO441, and PO446. Do the charcoal cannister and catalytic converter need to be replaced? Thank you for any information you can giv...