What if the scaning tool is not working with my computer

Hello, For your vehicle, if you want to check for trouble codes, the check engine light will let you know when there are codes stored, or there may be codes for other systems or pending codes that have not set a warning light. The code reader must comply with OBD-II (on board diagnostics - II), and the fuse for the diagnostic port (on the vehicle) must be good. If you still cannot access the powertrain control module with the code reader, your issues will need diagnosis with a professional scan tool.