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Honda crv 2001 code read p0420 id like to know if i should

Customer Question
replace the catalytic converter first...
Honda crv 2001 code read p0420 id like to know if i should replace the catalytic converter first or the oxygen censor
Submitted: 1 year ago.Category: Honda
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Answered in 2 minutes by:
9/1/2016
Mechanic for Honda: Kevin, Auto Mechanic replied 1 year ago
Kevin
Kevin, Auto Mechanic
Category: Honda
Satisfied Customers: 2,282
Experience: Diagnostic technician
Verified

9/10 this is down to the cat the only way to know for sure is to view the live data on diagnostic tool and analyse rear lambda operation .but more likely tobe the catalytic converter at fault

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Customer reply replied 1 year ago
I had it checked at the autozone, so where can i go to read the live data?
Mechanic for Honda: Kevin, Auto Mechanic replied 1 year ago

Anywhere with a scanner showing voltage for lanmbda bank 1 sensor 1 and bank 1 sensor 2 .bank 1 sensor 1 voltage shold fluctuate batween o and around 1 volts and the bank 1 sensor 2 should be static around 0.7 volts . If sensor two is moving then catalytic converter will need replacement

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Mechanic for Honda: Kevin, Auto Mechanic replied 1 year ago

Please rate my service and let me know if you need anything else at all

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Kevin
Kevin
Kevin, Auto Mechanic
Category: Honda
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