Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
Other than replacing a part, doing a relearn what else if any are your plans for use of the tool with the vehicle as there's all kinds of options, price levels, etc
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