I have had this specific OBD since 2014 when I bought a Toyota Celica 1.8 2004. Until now, I have only used it 4-5 times to clear some silly check engine lights. Recently, it showed me a problem with the pump and injectors. The program correctly gave me the code. I fixed them and everything is okay now. Now that it is working better than before, the mechanic tells me "it's showing P420. It's either the catalytic converter or the lambda sensor. You need to go to an exhaust specialist to check your catalytic converter, etc."
I connect the OBD, go to the sensors, and see that the second lambda sensor has failed. Thanks to this tool, I saved both time and money. In short, it works perfectly and shows you everything. For the program, I use the car scanner. Thank you