The nexpeak nx501 engine analyzer is an enhanced model fault code reader designed for engine system, featuring full 10 obdii modes diagnostic function in check all engine related trouble codes from vehicle ecu (electronic control unit), such as emission control, oxygen (o2) senor, evaporative emission canister purge valve (evap) etc. the nx501 car computer reader will read the faults which caused the check engine light comes on and tells you what’s wrong, it will guide you through fixing your car, erase trouble codes and turn off check engine light. also, nexpeak nx501 engine light scanner will help you to know what the real problem is before taking the car to workshops, avoid blind maintenance.
note: this nexpeak nx501 can not work on hybrid and electric cars