When your Harley isn't running right or a light on the dashboard flares up, you need to check out your Harley-Davidson diagnostic codes. These codes reveal where there may be a malfunction in different parts of your Harley and let you know what needs repairing. Keeping your bike in optimal condition starts with understanding how to check error codes and making a habit of doing so regularly to catch issues early.
To keep your Harley running at top condition and recognize times when parts of your bike need repair, you'll want to know how to check your Harley for its diagnostic codes. This guide can give you a hand.
When your Harley seems off or you want to give it a quick check, you can access your bike's diagnostic trouble codes (DTCs). You can take a few simple steps to view the codes and see if anything is malfunctioning. Any biker can check these DTCs on their own, as the process is fairly simple.
Learn more about how to check Harley codes below:
You can identify the Harley diagnostic codes by checking whether they have a U, P, C or B designation. A "U" code signals modules that have a communication problem. A "P" code will let you know the issue likely comes from a component monitored by the ECM. A "C" code tells you there's an Anti-Lock Braking System issue. Finally, a "B" code indicates an issue with the Body Control Module, instruments and radio.
Depending on your Harley's model year, you may have different diagnostic codes. You can find out what these codes mean by looking them up in your owners' manual or searching for them online.
If your bike shows a DTC code that's not historic, you don't want to let it go unresolved. While some handy bikers may be able to fix some codes themselves, it's often best to bring the bike to a professional for repairs.
After you see a code, the first thing you should do is get the issue fixed. Once the repair is finished, whether it's conducted by a professional or yourself, ensure you restore all connections. With connections restored, clear the DTCs off the bike. Start your Harley and go through several diagnostic code cycles to see if the code returns. If it does, you may need to conduct further repairs.
At Fat Head Cycles, we know all things Harley and can help you fix any diagnostic codes you've identified. Our experienced Harley motorcycle specialists are proud to serve customers with various maintenance, repair and custom motorcycle services. For those looking to make repairs on their bike themselves, we have a full online store with tons of parts, kits and modifications to take your Harley to the next level.
If you need assistance addressing the codes and repairing your bike, our in-shop services are here to help. Contact us today to speak with one of our representatives about any questions you may have about our services or products.
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