ANCEL AD410 is a great upgrade from the more basic car code reader read and erase codes when the check engine light comes on. It shows real-time live data reported by the ECU engine temperature O2 sensor readings etc. Even a beginner can use this unit to find out what the problem is saves the trips to mechanic.

Ancel AD410 Enhanced OBD II Vehicle Code Reader Automotive OBD2 Scanner Auto Check Engine Light Scan Tool EMISSION Analyzer
$37.21