When the "check engine" light comes on, we're left wondering what exactly is going on under the hood. With an engine code reader like this one, you can quickly find out what your vehicle is trying to tell you, and be armed with information before you rush off to a mechanic. Simply plug it in, turn on your ignition, and follow the on-screen prompts. The 3100i will show you existing problems, and can detect & display pending problems as well. Check and erase engine light codes with the push of a button on any car, light truck, minivan, hybrid, or SUV (OBD2) manufactured since 1996. The 3100i can also diagnose and erase anti-lock breaking system (ABS) codes on most 1996 and newer GM, Ford, Chrysler, Toyota and Honda's. A "freeze frame" feature shows engine conditions such as fuel trim and engine coolant temp at the time the malfunction indicator lamp was set. And it can also check the performance of your battery and alternator. The Innova 3100i averages 4.5 out of 5 stars on Amazon from over 830 people (read reviews) and its typical list price of $100 has been reduced to $79.
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