You must have a compatible ELM327 Bluetooth adapter plugged into your car's OBD-II port. You must have a compatible ELM327 Bluetooth adapter

Read and erase diagnostic trouble codes to clear the "Check Engine" light. most modern Nokia Symbian handsets).

After the trial, continued use requires an activation key purchased through the developer for approximately 9.95 EUR . Compatibility Requirements

A Symbian S60 3rd or 5th edition smartphone (e.g., most modern Nokia Symbian handsets).