I have a 2003 Xterra with 3.3 and 219,000 Miles. I am receiving codes P0420 and P0430 along with a P1456 code for fuel temperature sensor. The SES light has been on for knock sensor for a couple years now so I dont know when these codes appeared. The engine started hesitating, stumbling at cruising speed then it suddenly got better for a couple days and then started getting worse and starting shutting off at stop lights.
Could these symptoms be from a loose or leaking gas cap as the AZ print out suggests? (going to Nissan dealer now to get a gas cap to eliminate that)
Are these the symptoms of a bad catalytic converter?
Could the problem be just bad oxygen sensors?
Thanks for any info or recommendations.
Could these symptoms be from a loose or leaking gas cap as the AZ print out suggests? (going to Nissan dealer now to get a gas cap to eliminate that)
Are these the symptoms of a bad catalytic converter?
Could the problem be just bad oxygen sensors?
Thanks for any info or recommendations.
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