Did they give you the exact code? There are about 30 possible codes for the catalytic converter. But you want to make sure that it is not a wiring or connector problem before replacing the converter. Fortunately, for that year Pathfinder, the catalytic converter is only about $125 - $260, depending on brand, from RockAuto.
About $1000.00
SOURCE: nissan pathfinder -service engine soon light on
ALL those codes at once ! When was it last in for service? Haven't recently filled up with gas somewhere different by chance? First thing I'd do is add some fuel additive with moisture remover, and system cleaner, and see what that does, if you can still drive vehicle without too much trouble. What & when exactly did all this start, and what is vehicle doing?
SOURCE: check engine light
Since Autozone only turned off the light, if the problem persists, the light will come right back on. Autozone didn't actually do anything with the car. H02S12 means the Oxygen Sensor Bank 1 Sensor 2. They should have given you a trouble code as well for this, but I believe it would be P0136 as that generates this description. A faulty O2 sensor (the one located after your catalytic converter), a faulty cat, a leak in the exhaust could all trigger this
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SOURCE: Losing Power when driving Answer While driving my
this sounds like a fuel pump problem,but i cant advise without stripping the sender unit and haveing a play so to speak
SOURCE: 05 Nissan Pathfinder - Dies when driving. I pull
It is your Ipdm there is no code had the same problem
SOURCE: po420 on my 2001 sienna
P0420=Catalyst System Efficiency Below Threshold Bank 1,
The air filter is not the cause here,this is just a code saying your converter is not doing its best,
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