Read Codes
- Identifies which section of the emission control system has malfunctioned. You’ll get a general idea of what normally causes the code, and schedule a proper repair at a more convenient time.
Erase Codes
- Erases the codes from the vehicle after retrieving codes from the vehicle, and certain repairs have been carried out. Thus turning off the annoying MIL (check engine light).
I/M Readiness
- Checks whether or not the various emissions-related systems on the vehicle are operating properly, and are ready for Inspection and Maintenance testing. To help pass the emission test, and tell if it’s the time to have vehicle maintenance.
View Freeze Frame
- Takes the snapshot of the operating conditions when an emission-related fault occurs. These maintenance alerts help in identifying the problem easily, and let you know when need to go in for a vehicle inspection.
O2 Sensor Test
- Retrieves O2 sensor monitor test results of the most recently completed tests from the vehicle’s on-board computer. To improve the vehicle’s performance but also make it fuel-efficient. If you are a DIY then you can replace the defective O2 sensor for preventing possible damage to the catalytic converter. The latter may cost thousands of dollars to replace.