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Harley Code B1317: Common Causes and Solutions

by

Chase Manhattan

Chase Manhattan Avatar
Owner and Editor at The Wrench Network

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Hey y’all, it’s Chase Manhattan! I’m a life-long automotive and motorcycle enthusiast with a knack for diagnostics that I hope to share with you! Lately, I’ve been running my own motorcycle rental business, which you can read about here, and it has been a great experience that has allowed me to own numerous bikes that I probably couldn’t justify otherwise. Plus, it’s been a great way to experience new places while on vacation. If you haven’t heard of them before, I definitely recommend checking out the Riders-Share platform if you get the itch to ride while away from home, or if you want to explore a cheaper way to own and ride motorcycles!

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If you own a Harley-Davidson and are experiencing issues with your bike, it’s important to understand the diagnostic trouble codes (DTCs) that may appear on your dashboard. One of the most common codes is B1317, which indicates that the LHCM center button is stuck. This can be a frustrating issue to deal with, but fortunately, it can usually be resolved with a few simple steps.

First, it’s important to understand that the LHCM center button is part of the front hand controls on your Harley. This button is responsible for a variety of functions, including controlling your turn signals, high beams, and horn. When the button becomes stuck, it can cause these functions to malfunction or stop working altogether.

If you’re experiencing this issue, the first step is to check your battery. A weak or dying battery can cause a variety of issues with your bike, including problems with the front hand controls. If your battery is in good condition, the next step is to try and unstick the button yourself. This can usually be done by gently tapping the button or using a small amount of lubricant to loosen it up. If these steps don’t work, it may be necessary to take your bike to a professional mechanic for further diagnosis and repair.

Understanding Harley Codes

If you own a Harley, you may have come across the term “Harley codes” or “diagnostic trouble codes (DTCs)” while troubleshooting an issue with your motorcycle. Understanding these codes can be a valuable tool in diagnosing and fixing issues with your Harley. In this section, we’ll discuss the basics of Harley codes, including code categories and how to read them.

Code Categories

Harley codes are divided into different categories, each corresponding to a specific system in your motorcycle. The most common categories are:

  • Powertrain (P)
  • Chassis (C)
  • Body (B)
  • Network (U)

The Powertrain category includes codes related to the engine, transmission, and emissions systems. The Chassis category includes codes related to the brakes, suspension, and steering. The Body category includes codes related to the body, including the BCM (Body Control Module), radio, and instruments. The Network category includes codes related to communication between modules.

Reading Codes

To read Harley codes, you’ll need to access the diagnostic system on your motorcycle. The process for accessing the system can vary depending on your model and year, but it usually involves turning the ignition switch to the “On” position without starting the engine and then pressing and releasing the trip odometer trigger switch until “diag” appears on the odometer display.

Once you’ve accessed the diagnostic system, you can read the codes by pressing and releasing the trip odometer trigger switch. The codes will appear on the odometer display in the format of a letter followed by four numbers. For example, code B1317 indicates an issue with the LHCM center button being stuck.

It’s important to note that Harley codes are not always specific enough to pinpoint the exact issue with your motorcycle. They are simply a starting point for troubleshooting. To interpret the codes, you’ll need to refer to the Harley-Davidson trouble code chart or consult the service manual provided by the manufacturer.

In conclusion, understanding Harley codes can be a valuable tool in diagnosing and fixing issues with your motorcycle. By knowing the different code categories and how to read the codes, you can gain insights into potential faults within your motorcycle.

Common Electrical Issues

If you own a Harley Davidson, you may encounter various electrical issues over time. These issues can be frustrating, but with proper diagnosis, you can resolve them and get back on the road. In this section, we’ll discuss some common electrical issues and their possible causes.

Ignition Switch Faults

The ignition switch is an essential component of your Harley’s electrical system. If it fails, you won’t be able to start your bike. One of the common issues that Harley owners face is a faulty ignition switch. If you notice that your bike won’t start, or the starter motor won’t turn over, the ignition switch may be the culprit.

Another problem that can arise with the ignition switch is that the bike may start but then die immediately. This can be caused by a loose connection or a faulty switch. In some cases, the bike may start and run fine, but you may not be able to turn it off. This can be dangerous, and you should get it fixed immediately.

Battery and Charging System

The battery and charging system are critical components of your Harley’s electrical system. If the battery is dead or not charging correctly, you won’t be able to start your bike. One of the common issues that Harley owners face is a dead battery. If you notice that your battery is dead, you can try slow charging it for 12 hours and re-test.

If your battery is fine but your bike won’t start, it may be an issue with the charging system. Your bike’s charging system should read above 12.2 volts. If your Softail will start, keep the voltmeter connections in place and start the engine. The charging system should now be working, and battery voltage should increase to above 14 volts. If the battery reads low, the charging system may not be working correctly. This can be caused by a faulty regulator or stator.

In some cases, you may notice that your bike’s lights are dim or flickering. This can be a sign of a weak battery or a charging system issue. You should get it checked out by a professional to avoid any further problems.

In conclusion, if you encounter any electrical issues with your Harley, it’s essential to diagnose the problem correctly. Ignition switch faults and battery and charging system issues are common problems that you may encounter. By understanding these issues and their possible causes, you can resolve them and get back on the road.

Troubleshooting B1317

If you are experiencing the B1317 error code on your Harley Davidson, don’t worry. This error code indicates that the left-hand control module (LHCM) center button is stuck. Here are some initial steps and advanced diagnostics to help you troubleshoot this issue.

Initial Steps

Before diving into advanced diagnostics, you should perform some initial steps to ensure that the error code is not caused by a simple issue. Here are some steps you can take:

  • Check the battery voltage: A low battery voltage can cause various issues, including the B1317 error code. Make sure your battery voltage is sufficient.
  • Check the ignition switch: A faulty ignition switch can cause electrical issues, including the B1317 error code. Make sure your ignition switch is working correctly.
  • Check the LHCM buttons: Sometimes, the LHCM buttons can get stuck, causing the B1317 error code. Check the LHCM buttons and ensure they are not stuck.

Advanced Diagnostics

If the initial steps do not solve the issue, you can perform some advanced diagnostics to pinpoint the problem. Here are some advanced diagnostics you can perform:

  • Load test the battery: A load test can help determine if the battery is faulty. If the battery fails the load test, you may need to replace it.
  • Check the LHCM wiring: Check the LHCM wiring for any damage or loose connections. A damaged or loose wire can cause the B1317 error code.
  • Replace the LHCM: If all the above steps fail, you may need to replace the LHCM. The LHCM center button may be stuck, and replacing the LHCM can solve the issue.

In conclusion, the B1317 error code on your Harley Davidson can be caused by various issues, including a stuck LHCM center button. By following the initial steps and advanced diagnostics, you can troubleshoot this issue and get back on the road.

Harley Control Modules

When it comes to the Harley Davidson motorcycle, there are a few control modules that you should be aware of. These modules are responsible for controlling various functions of your motorcycle, including the engine, lights, and other electrical components. In this section, we will discuss the two main control modules that you should be familiar with.

Body Control Module (BCM)

The Body Control Module (BCM) is responsible for controlling various electrical functions of your motorcycle. This includes the lights, turn signals, and other electrical components. The BCM communicates with other control modules on your motorcycle through the Controller Area Network (CAN) bus. This allows the BCM to receive and send messages to other control modules on your motorcycle.

If you are experiencing issues with your BCM, you may see a LHCM Internal Error or RHCM Internal Error code. These codes indicate that there is an issue with the left-hand control module or right-hand control module, respectively. These codes can be caused by a variety of issues, including a faulty BCM, a wiring issue, or a problem with another control module on your motorcycle.

Engine Control Unit (ECU)

The Engine Control Unit (ECU) is responsible for controlling the fuel injection and ignition timing of your motorcycle’s engine. The ECU receives information from various sensors on your motorcycle, including the throttle position sensor, oxygen sensor, and crankshaft position sensor. This information is used to determine the correct fuel injection and ignition timing for your motorcycle’s engine.

If you are experiencing issues with your ECU, you may see a B1317 DTC code. This code indicates that there is an issue with the Body Control Module (BCM). The BCM may be faulty, or there may be a wiring issue between the ECU and the BCM. If you are experiencing this issue, it is important to have your motorcycle diagnosed by a qualified technician.

In conclusion, the Body Control Module (BCM) and Engine Control Unit (ECU) are two important control modules that you should be familiar with on your Harley Davidson motorcycle. If you are experiencing any issues with these control modules, it is important to have your motorcycle diagnosed by a qualified technician to ensure that the issue is resolved properly.

Error Codes and Meanings

When it comes to Harley-Davidson motorcycles, the onboard diagnostic system is designed to help you identify and troubleshoot any potential issues. One of the error codes that you may come across is B1317. In this section, we’ll take a closer look at what this error code means and how to handle it.

B1103 to B1339 Series

B1317 is part of the B1103 to B1339 series of error codes, which are related to the body control module (BCM). Specifically, B1317 indicates that the center button on the left-hand control module (LHCM) is stuck. This can cause issues with the functionality of the LHCM, which can impact your ability to control your motorcycle.

Handling Multiple Codes

If you’re dealing with multiple error codes, it’s important to address them in the correct order. The diagnostic trouble codes (DTCs) are prioritized based on their severity, so you’ll want to address the most critical codes first. In general, you should start with any codes related to the engine control module (ECM), as these can impact the overall performance of your motorcycle.

Once you’ve addressed any critical codes, you can move on to the less severe codes. However, it’s important to note that even seemingly minor issues can impact the overall functionality of your motorcycle, so it’s always best to address all error codes as soon as possible.

In conclusion, error codes like B1317 can be frustrating to deal with, but they’re an important part of keeping your Harley-Davidson motorcycle running smoothly. By understanding what these codes mean and how to handle them, you can ensure that your motorcycle is always in top condition.

Electrical Components

When it comes to Harley-Davidson motorcycles, the B1317 DTC code is related to electrical components. In this section, we’ll take a closer look at the sensors, switches, actuators, and relays that can trigger this code.

Sensors and Switches

The B1317 code can be caused by a malfunctioning sensor or switch. For example, the run/stop switch may be stuck or damaged, causing the code to appear. Similarly, a faulty turn signal switch or ignition switch can also trigger the B1317 code. If you suspect that a sensor or switch is causing the problem, you may need to replace it to resolve the issue.

Actuators and Relays

Actuators and relays are another potential cause of the B1317 code. For example, a faulty ET (Engine Temperature) sensor or VE (Vehicle Electrical System) sensor can trigger the code. Additionally, a malfunctioning relay or actuator can also cause the B1317 code to appear. If you suspect that an actuator or relay is causing the problem, you may need to replace it to resolve the issue.

It’s important to note that the B1317 code can be triggered by a variety of different electrical components. Therefore, it’s important to perform a thorough diagnostic test to determine the exact cause of the problem. Once you’ve identified the faulty component, you can take steps to repair or replace it as needed.

Maintenance and Prevention

Regular checkups are important to ensure that your Harley-Davidson motorcycle is in good condition. This will help prevent issues such as the B1317 code from occurring. During checkups, make sure to inspect the battery, load, and ignition switch. Check the battery for any signs of corrosion or damage, and make sure it is properly charged. A weak or dead battery can cause issues with the charging system, which can lead to the B1317 code being triggered.

In addition to regular checkups, upgrading components can also help prevent the B1317 code from occurring. Upgrading to a higher quality battery or upgrading the charging system can help ensure that your motorcycle is running smoothly and efficiently. This can also help prevent issues with the load and ignition switch, which can also trigger the B1317 code.

When upgrading components, make sure to do your research and choose high-quality parts that are compatible with your motorcycle. Installing incompatible or low-quality parts can cause more harm than good, and can even lead to more issues down the line.

Overall, regular checkups and upgrading components are key to preventing the B1317 code and ensuring that your Harley-Davidson motorcycle is running smoothly. By taking care of your motorcycle and investing in high-quality parts, you can enjoy a safe and enjoyable riding experience for years to come.

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