Check for trouble codes of course. Sure, you could spend the money on a good Ford-specific EEC-IV diagnostic code reader, but why do that when you could just as easily test for trouble codes manually?

In the beginning, only a few people took the effort to understand it. Check out the diagnostic trouble code and how to break it!

The Check Engine light may indicate a serious issue with your Cummins diesel engine. Here's how to check and clear the fault codes triggering that light.

Read the tech article on Chevrolet Corvette Trouble Codes, brought to you by the experts at Corvette Fever Magazine.

Did you use an OBD2 scanner on your car to figure out why the check engine light is on, only to get the P0303 code? Here's what it means, plus possible fixes.

Having a hard time interpreting the car codes your dashboard is displaying? Car codes can be confusing, so here are the best OBD2 scanners for reading, analyzing and clearing diagnostic trouble ...

We show you how to manually test for trouble codes, perform a cylinder balance test or clear trouble codes on any Fuel Injected Fox-Body Mustang.