mycatsareloudB to Mechanic Advice@gearhead.townEnglish · 1 year ago

P0420 diag

mycatsareloudB to Mechanic Advice@gearhead.townEnglish · 1 year ago

2004 toyota camry 2.4l l4 263k miles

Got the infamous bank 1 p0420 catalytic converter code,

Just wondering how do I differentiate between the actual cat and an oxygen sensor or gas tank cap

Car is running fine but Definitely lower fuel economy

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mycatsareloudOPB
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1 year ago
I see a high of 10.2 for long term trim and 12.5 for short term, these seem a little high, right? *

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