Reply – the function of OBDII Code Scanner
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the function of OBDII Code Scanner
— by deborahiii deborahiii
When the "Check Engine" light comes on, many motorists don't have a clue as to what to do next. They know the light means something is wrong, but is it a serious problem or a minor one? The only way to know for sure is to plug an OBDII Code Scanner or code reader into the vehicle's diagnostic connector and see what comes out.

One of the first auto parts stores to offer a free plug-in obd2 diagnostic service for motorists who wanted to find out what was causing their "Check Engine" light to come on. The program is popular with motorists because it saves the cost of having to take the vehicle to a new car dealer or repair facility to have it diagnosed. Being able to tell customers why their "Check Engine" light is on opens the door for potential parts sales, and it helps the motorist to decide whether or not the problem is something they want to tackle themselves. At the very least, knowing why the "Check Engine" light is on allows the customer to be better informed should they decide to take their vehicle to a professional for repairs.

An Onboard Diagnostic II (obd2) plug-in diagnosis is relatively simple to perform and requires only an OBDII Code Scanner or basic scan tool. The obd2 tool is plugged into the diagnostic connector (which is usually located under the instrument panel near the steering column). To read the code(s) that are causing the "Check Engine" light to come on, you simply turn on the ignition, follow the prompts on the code reader or scan tool screen and read out the code(s).

The least expensive OBDII Code Scanner only display a number, so you have to look up the code definition in a handbook to find out what it means. The more expensive tools give you the number and a brief definition. The trouble is, a code doesn't always tell you what the underlying problem is, what might be causing it or what parts are needed to fix the problem. But, it is a starting place and gives you some direction as to what might be wrong with the vehicle so your customer can decide what he or she wants to do next.
JMA TRS-5000