Even if you don't
repair your vehicle yourself, knowing the
Diagnostic Trouble Code number before taking the
vehicle in for repair is good knowledge to have.
Once the vehicle is repaired, the Diagnostic
Trouble Code(s) can be erased and the Check
Engine light turned off using this scan tool.
In areas that require a smog test, an
illuminated Check Engine light fails the
emission test, even if the repaired vehicle
might otherwise pass inspection. This OBD II
Scan Tool turns off the Check Engine light.
Another highly useful application for the scan
tool is purchasing used vehicles. Used vehicles
can have all sorts of expensive mechanical or
electrical problems. Since the scanner is a
portable device, the buyer can connect the scan
tool to the vehicle and in a few seconds
determine if the vehicle has detected a problem.
Remember, not all Diagnostic Trouble Codes
illuminate the Check Engine light and a scan
tool is the only way to obtain the information.