Connect your ELM321 adapter / OBD 2 scanner module with this application to perform diagnostics (check the list of errors / faults in the ECU sensor that is causing the car / vehicle malfunction) and delete / reset the vehicle / car OBD engine ECU error code. all features are available for free.1. There is a demo feature to try if you dont have an ELM32 adapter.2. Bring up all sensors detected on the car.3. Detect fault codes from sensors that are not functioning properly.4. Reset / remove the check engine light indicator on the dashboard.send suggestions by email. Please Rate. Thank you.