One problem related to catalytic convertor has been reported for the 2001 Nissan Frontier. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2001 Nissan Frontier based on all problems reported for the 2001 Frontier.
I bought a 2001 Nissan Frontier 27,000 miles on it soon afterwards service engine soon light came on, dealer replaced catalytic converter, since then light constantly comes on now have 128,000 miles on truck this has been an ongoing problem from the get go. The catalytic convertor was changed around 50,000 miles would there be any warranty on the new unit?.