Question

I have a 2004 Nissan Sentra SER with the P0420 code, is it safe to drive for 6 months?

Answer 1

I have an 02 Nissan Maxima. recently I changed  the rear valve cover gasket.it seems like I swiched ignition cables from 3 to 4 and viseversa. I drove the car misfiring for 10 miles. Once I realized what i have done I reversed cables and everything is fine now. it running like before. However, I just got codes po300,po0420 an po455.I had it reset but now the yellow light came on again.

I am going to disconnect the battery for 30 minutes and one of these faults should clear up.I am taking my car to either Auto Zone or Advance Auto Parts to clear the faults and find more.

Did I further damaged my car system by driving it whlie misfiring?????

Answer 2

P0420 NISSAN - Catalyst System Efficiency Below Threshold Bank 1

Read more: https://www.autocodes.com/p0420_nissan.html