The Tractor Troubleshooting Contest tests a team's ability to find problems on a tractor. This contest was started in 1972. In the 1990's and early 2000's, the contest consisted of a test and between 3 and 6 tractors that have 2 problems each. A team must be first or second in the district to proceed to the state level. Two members comprise the team. For the 2007-2008 school year, this contest was reorganized and renamed the Agricultural & Industrial Diagnostics Contest. For the 2015-2015 school year, this contest was renamed the Agricultural Power Diagnostics CDE.

1971-1972 / 1979-1980

1980-1981 / 1989-1990

1990-1991 / 1999-2000

2000-2001 / 2009-2010