Your Jeep is equipped with a computer that senses and stores all of the information about how your Jeep is running and any problems it may be having. If your Jeep vehicle is not operating properly, you can scan its computer and check the error codes to determine what is causing the problems. These error codes are designed to tell you which part of the Jeep is malfunctioning. Each error code represents a particular problem your Jeep is experiencing. By determining what the error codes mean, you can figure out how to repair your Jeep.
Find a code reader to scan your Jeep's motor. Mechanic shops and automotive parts stores have scanners on hand to use for diagnosis or you can purchase one for your personal use.
Attach the code reader to the Jeep's computer. The specific procedure for hooking up the code reader will depend on both the type of Jeep you have, the age of your Jeep and the model of code reader. When the error codes start to appear, write each one down exactly as it appears.
Determine the meaning of each error code, using a code reader. You can find lists of Jeep error codes and generic error codes online at Engine Light Help. Your code reader should come with a booklet of code meanings.
