If you’re having issues with your car, one of the first things you should do is check the diagnostic codes using an OBD2 scanner. In this post, we’ll show you how to use an OBD2 pocket scanner to read these codes and diagnose the problem with your vehicle.
First, locate the connection for the OBD2 scanner under the dash of your car. It will look like a little fitting on the metal end. Plug the scanner in and turn the key to the “on” position (not the start position).
On the scanner, you’ll see two buttons. Click “read” once to let it read the code. If you have multiple codes, push down on “read” again to see the next one. Make a note of these codes, as you’ll need them to diagnose the issue.
To look up the codes, simply search online for the code number. If you have multiple codes, write them all down and find the common denominator between them. This will help you determine the root cause of the problem.
It’s important to note that you shouldn’t jump to conclusions and start changing sensors just because you see multiple codes. Often, your vehicle will only have one issue, but the computer tries to overcompensate with fuel or air, which can cause additional codes to be thrown.
Start with the easiest process first. For example, if you have a faulty spark plug, it may cause a misfire that triggers an O2 sensor or cam sensor code. Don’t change those sensors – change the easiest things first, and the emissions that come out of the exhaust will change. This will cause the computer to compensate and reset the second code.
Once you’ve fixed the problem, hit “erase” on the scanner to clear the codes. If you want to check if the code has been fixed, erase it and try your vehicle again. However, if the code comes back, it means you haven’t fixed the issue.
If your codes don’t come back until after you start the car, it’s likely not an electrical issue, but rather fuel or air related.
In conclusion, using an OBD2 pocket scanner to diagnose your car’s issues can save you time and money. Remember to start with the easiest process first, don’t jump to conclusions based on multiple codes, and look for the common denominator between them. Happy diagnosing!