Code P0420 Catalyst Efficiency (Bank 1)
driveaccord.net
Code P0420 Catalyst Efficiency (Bank 1)
I have Honda Accord LX 2013 124K miles on it. I have a check light with Code P0420. The dealer is saying to change a catalytic converter. I search that this may be a problem with the O2 sensor. Can anyone help me with what to do? And if we change the O2 sensor, should that be downstream or...
9 months ago
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