Like almost everything new today, your car has a computer, and if it’s 1996 or newer, it has an OBDII port which stands for onboard diagnostics second-generation, that allows for error codes to be easily read.
A good OBDII code scanner can read and clear error codes, which is invaluable to troubleshooting a car or truck with mechanical issues.
The main thing most look at is how the engine is running, which can be done by scanning the onboard computer codes.
When you get a check engine light, it can make you feel like, what does that mean?
As you can see, using a scan tool makes things easier than troubleshooting from nothing and give you an idea of what is wrong and where to start.
Something that is also commonly done is simply Google the code and your vehicle model and year and read through the forums to get an idea of what others have done to solve the problem.
There will be times when a problem is too complex to fix for the average DIY backyard mechanic, but for the easy fixes such as the O2 sensor, the Pocket-Scan can be a nice money saver.
The Actron CP9125 PocketScan Code Reader really is a nice inexpensive, easy way to read your codes and give you some knowledge on whether to repair it yourself or take it to the shop.
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Actron CP9125 C PocketScan Code Reader for 1996 and Newer Vehicles
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