Why chose our scanner? 2 in 1 Code Reader. It supports Gas engine, diesel engine either. It supports 12V and 24V Car Truck SUV Sedan pick u, light truck, heavy duty etc. 24V Diesel Truck Scanner with All Systems Diagnosis. What’s main functions of this code reader? Read fault code and clear fault code. 12V gas car, read and clear Engine System fault code, turn of MIL light. 12V diesel engine automotive, read and clear full system fault code and turn off fault light. Supports More communication protocols than gas engine code reader. In OBD car mode, this scanner supports. J1850 VPW/ J1850 PWM/ ISO15765-4(CAN11,29)/ ISO14320(KWP)/ ISO9141. In Truck Mode, this scanner supports. SAEJ1939/ SAE J1587/ J1708. It would help us find correct trouble and solution. Supports Chinese and English. What’s device could help by this scanner? This scanner supports gasonline and diesel engine. It supports 12V and 24V car, truck, SUV, light truck, heavy duty truck, bus, project equipment, construction automotive, agriculture equipment, tractor etc. In OBD mode, supports. OBD2 Standard cars since 1996 to now in US market. Such as Ford, toyota, GMC, GMC, Chevy, BMW, Benz etc. In HD OBD mode. Included OBD2 cars, included automotives, that supports 6Pin 9Pin plug. Not only Ford, GM, besides, included CUMMINS, DETROIT, MAXXFORCE, CATERPILLAR, MACK, FREIGHTLINER, INTERNATIONAL, KENWORTH, AMERICAN LAFRANCE, AUTOCAR, JOHN DEERE, PETERBILT, PACCAR, ERF, SETRA BUS, WESTERN STAR, PIERCE, SEDDON-ATKINSON, STERLING, SISU, STEYR, etc. So far we know, following device support communication protocol. For Truck (24V): Please kindly enter the menu “HD OBD” if you want to diagnose those vehicles. Freightliner, Mack, Peterbilt, Sterling, Western Star(J1708 protocol). Fuso, Hino, International, Isuzu, Iveco, Mercedes Truck, Man, Scania, Renault, ERF, DAF, Nissian UD, Paccar (J1939 protocol). Volvo, GMC truck, Mack (J1708 protocol). BobCat, Case, Caterpillar, Komatsu, Terex (J1938, J1708 protocol). John Deere(J1939 protocol). In HD OBD mode, this scanner supports All system diagnostic, scan fault code, clear fault code. Such as Engine, ABS, SRS, TPMS etc. It could not DPF etc. Reset function, DPF regen etc.