If you own a vehicle then you need to own the scanner codes for cars in case something is wrong with your car. You can definitely know if there are problems with your vehicle by looking at the Checking Engine Light. If the light is on then there is definitely something wrong with your car. Having the scanner will help you to quickly determine where the problem is located in. You will get a code or two that indicated the issues.
The codes are known as DTC or Diagnostic Trouble Codes. It is a code with computer basis installed in your car. There are so many codes in your car and every time there is something wrong with the system in your car, the Check Engine Light will be turned on. This is why you need a scanner code that will show you the specific problem.
However, the symptoms do not always make the Check Engine Light becomes illuminated. Since there are so many codes and there might be one or more possible problem. This is why you need to have the knowledge about automotive even though just a little. And do not forget to bring the scanner codes for cars everywhere you go with your vehicle.