Two problems related to emission control have been reported for the 2001 Toyota Tundra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2001 Toyota Tundra based on all problems reported for the 2001 Tundra.
Oxygen sencers going bad with only 4900 miles on truck 1time41853 miles on12/22/2003 2,time 49365 miles on 8/26/2004.
Check engine light came on, took vehicle to Toyota dealership for diagnosis. Air/fuel ratio sensor bad. Vehicle only 5,000 miles over warranty (41,000 miles). Estimated repair cost $490. 00. I was under the impression that this was an item covered uinder a federal emissions warranty that lasts 8 years or 80,000 miles.