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Harley Code B1354: Understanding and Troubleshooting Tips

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Chase Manhattan

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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 motorcycle, you may have encountered a problem with the GPS antenna or security antenna. One of the error codes that may appear on your bike’s dashboard is Harley Code B1354. This code indicates that there is an issue with the GPS antenna, which could be open or shorted.

When you see Harley Code B1354, it’s important to take action as soon as possible to prevent further problems. The GPS antenna is an essential component of your bike’s security system, and if it’s not functioning properly, your bike may not start or may stall while you’re riding. You may also experience issues with your bike’s audio system if the GPS antenna is not working correctly.

If you’re not sure what to do when you see Harley Code B1354, don’t panic. There are several steps you can take to troubleshoot the issue and get your bike back on the road. In the following sections, we’ll explore some of the common causes of Harley Code B1354 and provide some tips for diagnosing and fixing the problem.

Understanding Harley Diagnostic Trouble Codes

DTC Basics

Harley Diagnostic Trouble Codes (DTCs) are codes that indicate a malfunction in your Harley-Davidson motorcycle. These codes can be read by the self-diagnostic system of your motorcycle and can help you identify the problem with your bike.

DTCs consist of a letter followed by four digits. The letter indicates the system or area of the motorcycle where the problem is detected, while the digits provide more specific information about the issue. For example, the letter “B” indicates a problem with the body control module, while the digits “1354” provide more specific information about the issue.

Harley’s DTC Numbering Format

Harley’s DTC numbering format is consistent across all models. The first letter of the code indicates the system or area of the motorcycle where the problem is detected. The following table provides a brief overview of the most common letters and their corresponding systems:

Letter System/Area
B Body Control Module
C Chassis Control Module
P Powertrain Control Module
U Network Communication

The digits following the letter provide more specific information about the issue. For example, the code B1354 indicates a problem with the GPS antenna. On the other hand, the codes B1103 and B1153 indicate problems with the fuel sender and engine temperature respectively.

If you encounter a DTC on your Harley, it is recommended that you take your motorcycle to an authorized Harley-Davidson dealer to have the appropriate service performed as soon as possible. This will help you avoid further damage to your motorcycle and ensure that your bike is running smoothly.

Common Causes for B1354 Error

If you are experiencing the B1354 error code on your Harley, it is important to identify the root cause of the issue to prevent further damage to your bike. Here are some of the most common causes of the B1354 error code.

Ignition Coil Issues

One of the most common causes of the B1354 error code is ignition coil issues. The ignition coil is responsible for providing the spark that ignites the fuel in the combustion chamber. If the ignition coil is faulty, it can cause a weak spark or no spark at all, leading to the B1354 error code.

To check if the ignition coil is the problem, you can use an ohmmeter to measure the resistance of the coil. The resistance should be within the manufacturer’s specifications. If it is not, you may need to replace the ignition coil.

Battery and Electrical Problems

Another common cause of the B1354 error code is battery and electrical problems. If the battery is weak or not charging properly, it can cause a voltage drop that can trigger the B1354 error code. Electrical problems such as loose connections, damaged wires, or a faulty sensor can also cause the error code.

To check if the battery is the problem, you can use a multimeter to measure the voltage across the battery terminals. The voltage should be within the manufacturer’s specifications. If it is not, you may need to replace the battery.

If you suspect that there is an electrical problem, you should inspect the wiring and connections for any damage or loose connections. You can also use a diagnostic tool to check for any fault codes that may help identify the problem.

In conclusion, the B1354 error code can be caused by a variety of issues, but ignition coil issues and battery and electrical problems are among the most common. By identifying the root cause of the problem, you can take the necessary steps to fix it and keep your Harley running smoothly.

Troubleshooting B1354 Error

If you’re experiencing the B1354 error on your Harley, don’t worry, there are steps you can take to troubleshoot and resolve the issue. Here are some initial steps you can take to diagnose the problem:

Initial Steps

  1. Check the battery: Make sure your battery is fully charged and in good condition. A weak or dead battery can cause all sorts of issues with your bike’s electrical system, including the B1354 error.

  2. Check the ignition coil: The B1354 error is often caused by a problem with the ignition coil. Use an ohmmeter to check the resistance of the coil. If the resistance is outside of the manufacturer’s recommended range, the coil may need to be replaced.

  3. Check the wiring: Inspect the wiring leading to the ignition coil for any damage or loose connections. A damaged or loose wire can cause the B1354 error.

Advanced Diagnostics

If the initial steps don’t resolve the issue, you may need to perform more advanced diagnostics. Here are some additional steps you can take:

  1. Check the BCM: The Body Control Module (BCM) is responsible for controlling many of the electrical systems on your Harley. Use an onboard diagnostic tool to check for any Diagnostic Trouble Codes (DTCs) stored in the BCM. If you find any DTCs related to the ignition system, they may be causing the B1354 error.

  2. Check the wiring harness: Inspect the wiring harness leading to the BCM for any damage or loose connections. A damaged or loose wire can cause issues with the BCM and lead to the B1354 error.

  3. Consult a professional: If you’re unable to resolve the issue on your own, consider consulting a professional mechanic or Harley dealer. They have the expertise and equipment necessary to diagnose and repair complex electrical issues like the B1354 error.

By following these steps, you’ll be able to diagnose and resolve the B1354 error on your Harley. Remember to always be cautious when working with electrical systems and consult a professional if you’re unsure about any aspect of the troubleshooting process.

Body Control Module (BCM) Functions

BCM and B1354

The Body Control Module (BCM) is an essential component of your Harley-Davidson motorcycle. It is responsible for controlling various functions of the motorcycle’s body, such as lighting and horn. The BCM also communicates with other modules to ensure that all systems are working correctly. One of the faults associated with the BCM is B1354. This fault code indicates that the GPS antenna is open.

BCM Related Faults

Besides B1354, there are other faults associated with the BCM. These faults include LHCM Internal Error and RHCM Internal Error. The LHCM Internal Error indicates that there is a fault in the left-hand control module, while the RHCM Internal Error indicates a fault in the right-hand control module.

To troubleshoot these faults, you need to check the battery voltage and make sure it’s at least 12.5 volts. You should also check the fuses for the BCM and make sure they’re not blown. Additionally, check the connections to the BCM and make sure they’re clean and tight.

If you’re experiencing any of these faults, it’s essential to address them as soon as possible. Ignoring these faults can lead to more severe problems that could be costly to fix. Always seek professional assistance if you’re unsure about how to troubleshoot or repair the BCM or any other component of your Harley-Davidson motorcycle.

In summary, the BCM is an important component of your Harley-Davidson motorcycle, responsible for controlling various functions of the motorcycle’s body. B1354 is one of the faults associated with the BCM, indicating that the GPS antenna is open. Other faults include LHCM Internal Error and RHCM Internal Error. It’s essential to address these faults as soon as possible to avoid more severe problems.

Radio and Hand Control Module Errors

If you are experiencing Harley Davidson code B1354, it is likely related to radio and hand control module errors. There are two main issues that can cause this error: radio voltage issues and control buttons malfunction.

Radio Voltage Issues

One possible cause of Harley Davidson code B1354 is radio voltage issues. This can occur when the radio voltage is either too high or too low. If the voltage is too high, it can cause damage to the radio and other electrical components. If the voltage is too low, it can cause the radio to malfunction and display error codes.

To avoid radio voltage issues, it is important to regularly check the battery voltage and ensure it is within the recommended range. You should also check the fuses for the radio and hand control module and make sure they are not blown. Additionally, you should check the connections to the radio and hand control module and ensure they are clean and tight.

Control Buttons Malfunction

Another possible cause of Harley Davidson code B1354 is control buttons malfunction. This can occur when the rear hand controls are shorted either too high or too low. If the controls are shorted too high, it can cause damage to the control buttons and other electrical components. If they are shorted too low, it can cause the control buttons to malfunction and display error codes.

To avoid control buttons malfunction, you should regularly check the rear hand controls and ensure they are not shorted. You should also check the wiring for the controls and ensure they are not damaged or frayed. Additionally, you should check the connections to the hand control module and ensure they are clean and tight.

By following these tips, you can prevent radio and hand control module errors and avoid Harley Davidson code B1354.

Fuel System Diagnostic Codes

If you are experiencing issues with the fuel system of your Harley, you should check the diagnostic trouble codes (DTCs) to help you identify the problem. The fuel system diagnostic codes include the fuel level sender errors and fuel signal faults.

Fuel Level Sender Errors

The fuel level sender is responsible for sending the fuel level information to the instrument cluster. When there is an issue with the fuel level sender, you may encounter the following DTCs:

  • Fuel Level Sender Shorted Low/Open (B1127)
  • Fuel Level Sender Shorted High (B1128)

If you are getting the B1127 DTC, it means that the fuel level sender circuit is shorted to ground or open. On the other hand, if you are getting the B1128 DTC, it means that the fuel level sender circuit is shorted to power.

Fuel Signal Faults

The fuel signal faults are related to the fuel pump and fuel injectors. When there is an issue with the fuel signal, you may encounter the following DTCs:

  • Fuel Signal Low (B2103)
  • Fuel Signal High (B2104)

If you are getting the B2103 DTC, it means that the fuel pump or fuel injectors are not receiving enough power. On the other hand, if you are getting the B2104 DTC, it means that the fuel pump or fuel injectors are receiving too much power.

It is important to note that the fuel system diagnostic codes may not always be accurate. Therefore, it is recommended that you consult a professional mechanic to help you diagnose and fix the problem.

Additional Error Codes Related to B1354

If you are experiencing an error code B1354 on your Harley, there may be other error codes related to it that you should be aware of. These error codes are related to the faceplate buttons and handlebar control module faults. Here are some of the most common ones:

Faceplate Button Errors

  • Faceplate Preset Button 1 Stuck: This error code occurs when the preset button 1 on the faceplate is stuck or not functioning properly. This can be caused by a variety of factors, including dirt and debris buildup, or a faulty button. To fix this issue, you may need to clean the button or replace it altogether.

  • Faceplate Preset Button 6: This error code occurs when the preset button 6 on the faceplate is not functioning properly. This can be caused by a variety of factors, including dirt and debris buildup, or a faulty button. To fix this issue, you may need to clean the button or replace it altogether.

Handlebar Control Module Faults

  • LHCM Up Button Stuck: This error code occurs when the up button on the left handlebar control module is stuck or not functioning properly. This can be caused by a variety of factors, including dirt and debris buildup, or a faulty button. To fix this issue, you may need to clean the button or replace it altogether.

  • RHCM Info Button Stuck: This error code occurs when the info button on the right handlebar control module is stuck or not functioning properly. This can be caused by a variety of factors, including dirt and debris buildup, or a faulty button. To fix this issue, you may need to clean the button or replace it altogether.

If you are experiencing any of these error codes along with B1354, it is important to address them as soon as possible. Ignoring these issues can lead to further problems down the road. If you are unsure how to fix these issues, it is recommended that you seek the assistance of a professional Harley mechanic.

Maintaining Your Harley’s Electrical System

As a Harley owner, it’s essential to maintain your bike’s electrical system to avoid any issues while riding. One of the most common issues that Harley riders face is the B1354 code, which indicates a problem with the rear ignition coil.

To avoid this issue, you should regularly check your battery’s voltage and charge it if necessary. A weak battery can affect your bike’s electrical system, causing issues with the ignition coil and other components. You can use a multimeter to check your battery’s voltage and ensure it’s within the recommended range.

Another crucial component of your bike’s electrical system is the ignition coil. The ignition coil is responsible for generating the spark that ignites the fuel in your engine. If the ignition coil is faulty, it can cause issues with starting your bike or even cause it to stall while riding. Regularly checking your ignition coil’s resistance and ensuring it’s within the recommended range can help prevent issues with the B1354 code.

If you do encounter the B1354 code, it’s essential to diagnose and fix the issue promptly. Ignoring the code can lead to more severe problems with your bike’s electrical system. You can use a diagnostic tool to read the code and identify the issue. Once you’ve identified the problem, you can replace the faulty component or repair any damaged wiring.

In summary, maintaining your Harley’s electrical system is crucial to avoid issues with the B1354 code and other electrical problems. Regularly checking your battery’s voltage and your ignition coil’s resistance can help prevent issues from occurring. If you do encounter the B1354 code, it’s essential to diagnose and fix the issue promptly to avoid more severe problems.

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