Your Resource
for the Illinois Vehicle Emissions Testing Program
Training Materials and Resources
Effective repairs are the key to achieving the emissions reduction goals in Illinois. Following are training resources for repair technicians to improve the success of emissions-related repairs.
Online Training Resources
Other Repair Assistance Resources
- Original Equipment Manufacturer (OEM) Service Websites
- SAE J1962
- Understanding On-board Diagnostics
- Engine Switching Fact Sheet
- Tampering - see Mobile Sources
- State and Local Transportation Resources
- United States Environmental Protection Agency (US EPA)
- Diagnostic Trouble Codes