Review on CGSULIT OBD2 Scanner Car Code Reader, SC301: Comprehensive Diagnostic Scan Tool for Check Engine Light, Emission Analysis, O2 Sensor Test, Smog Check - Car Health Monitor and Repair Tool (Black) by Dennis Moonin

When the "idiots" light comes on, you don't know what's going on. Can cause severe stress. Just received and tested on my car with full diagnostics. Knowing that something is insignificant reduces the stress of wondering if it will die in the middle of the Nevada desert, the Utah desert, or the plains of Wyoming. not read correctly. After checking the pressure in my five tires, it turned out that a pressure sensor was defective. Knowing it doesn't matter relieves my stress. This is a great product. Its worth it.