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A scan tool allows for the OBD II (On Board Diagnostics) codes to be read from the engine computer in a car. These are common electronic diagnostics tools used by automotive technicians. They are usually used when a check engine light comes on to determine the error codes associated with the check engine light.
They almost always connect via a standard plug on the divers side under the dash.
Most automotive parts supplier will check a car with complementary service to determine the codes stored in a customers automobile.
The check engine light is set by the onboard computer detecting a malfunction or out of tolerance condition. The code(s) can be read with an OBD-II scanner. Once the condition(s) that cause the codes are repaired, the code can be cleared with the OBD-II scantool. You can purchase these tools at local auto parts stores. Be careful though; the cheapest ones will only read the codes, but cannot reset the Check Engine Light.
Most of the larger-chain auto parts stores have hand-held OBD II scan tools and will allow you to use them there at no cost. Plug the scanner into the OBD port and read/record the code(s) stored in your car's computer. The scanner should also have a function that erases stored codes and turns off the "check engine" light. Then, ask the counterman/woman what the code means and decide whether or not to have the malfunction repaired or serviced. Good luck.
If the CHECK ENGINE light come on, the PCM (computer car) have stored a
fault code there; I suggest scanned this and note what fault code is
there. Sometimes Autozone or AutoShop make this reader with OBD tools
The check engine light is on because the computer has detected a problem. If your car is a model year 1996 or newer then it is OBD II and you will need an OBD II scanner to retrieve the code(s). Most scanners have the ability to "reset" the light also. You can disconnect the battery for 15 minutes and the light will go off, but if the same problem exsists, the light will come back on.
Hi, the check engine light will require you to have the engine CPU scanned for trouble code's. This can only be administered with the assistance of a diagnostic computer scan tool OBD II. You can purchase this tool, at your local auto parts store, or you can just have the scan ran at your local auto zone parts store, free of charge. Once the diagnostic scan is administered, you will be able to isolate the issues that have caused the check engine light. This scan tool will display a print out code and the location of the issue, on the engine, as well. There are Many issues that will cause the engine light to illuminate, but the most common cause will be a failed monitoring sensor, or sensor harness failure(separated power wire, or ground). After retrieving the code, it will be interpreted to know what caused the lights to come up and that will be used to fix the problem.
no the obd ll is not like the older obd units where u could use a paper clip to get code ----most auto stores such as auto zone/advanced auto offer scans for free check ur local area but also check ur gas cap [for proper fit -on correctly]most common reason for check engine light good luck
It can be many things. The Check Engine Light indicates the ECU has detected that something is not as it should be with the emissions system. If the engine is running great then you can continue to drive the car until you get it repaired. You need to have the computer scanned with an OBD2 scan tool. This tool will retrieve the code that has been set by the ECU. That code will tell you where to start looking for the problem. It can be as simple as a loose gas cap, a defective O2 sensor, or any number of other problems. Some auto parts stores will scan the vehicle for free.