Emissions codes

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Jan 16, 2020

pitnut

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Emissions codes

Hey, guys i just grabbed an '05 civic dx. after a bit of driving i got a check engine light, code reader came up with p0139, p0420 and p0497. i assume the first two are related to the o2 sensor and the 3rd is an evap sensor. What would be the best way to fix these? Would a new evap and 02 sensor fix this or should I do other diagnoses? I can supply any more info and appreciate any help! also the valve gasket is leaking and i have a replacement on the way.

Jan 16, 2020

Colin42

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Re: Emissions codes

P0420 is for the cat, but try replacing the O2 sensors first

Jan 16, 2020

Colin42

"Marge, anyone could miss Canada! All tucked away down there."

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From: Barrie, ON Canada

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Re: Emissions codes

Use OEM Denso or ntk sensors only

Apr 3, 2020

Spotcw

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Re: Emissions codes

Did you fix the problem? I have P0420 code and checked catalytic converter with temp reader and it looks good; 300 degrees going in and 500 degrees coming out. I’m hoping its the 02 sensor. Let me know. PM me.