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P0420 Nissan Altima. A three way catalyst converter Manifold with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. P0420 codemy 03cat and both 02 sensors500 miles I have had a p0420 code on my 03 nissan altima 25 I have changed the cat and both 02 sensors and it keeps coming back around 500 miles.
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P0420 NISSAN Catalyst System Efficiency Below Threshold Bank 1. Was driving my car home from work last week and it popped the Service Engine light on with code P0420 referencing the catalytic converter. I turned off the Check Engine light after each repair and two days later the same P0420 code turns on the Check Engine light.
My 2005 Nissan Altima 25 L has a P0420 code error Catalyst System Efficiency Below Threshold Bank 1.
Generally coolant loss is the most common cause of overheating. A three way catalyst converter Manifold with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. P0430 NISSAN Catalyst System Efficiency Below Threshold Bank 2. Here is full description.
