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2000 Landcruiser. I needed to see what code for an O2 sensor, plugged it in, waited for the solid red light, then tried to start my car but it was dead. Full power to all electronics just nothing when I turn the key, silence. Tried to pull codes while vehicle is in "on" positions but it failed to pull any. I looked over all fuses and even did a hard reset with the battery. Nothing. Pulled out a volt meter and checked all connections from batter to started and to relays all is well. Its highly unlikely that my starter went out the only time I have ever hooked this up. Im guessing this did something to my ECU. Will update once the shop can figure it out.