Review on 🔍 Autel MS309 OBD2 Scanner: Check Engine Fault Code Reader with Freeze Frame Data, Clear Codes, I/M Readiness, CAN Diagnostic Scan Tool by Richard Simmons

I've never seen an ODB2 version but after some starting problems I was hoping there would be a diagnostic number in the car which would help. The car didn't start for 2 days and NOTHING was saved? no Nothing. The device displayed the VIN and other "codes" associated with the car and all menus worked fine. I adjusted the engine, let it run for a few minutes, it started running less smoothly but not erratically, but there are no codes. Have been registered. The emissions menu said everything was fine. It's good. In a few weeks, this 19-year-old car will have to pass an emissions test (required by the state) to pass annual registration fees and paperwork. that all Acura and Honda owners will be familiar with) and the car started. Some also refer to it as the "main relay". It costs $22 to $100 depending on where you buy it. It's a bit hard to get to in my car if you don't know where to look/get. So I'm assuming MS309 is working as expected. Thumbs up.