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Harley Code 81307: What It Means and How to Fix It

by

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 are a Harley-Davidson owner, you may have encountered a situation where your bike’s check engine light comes on. This can be a frustrating experience, especially if you are not familiar with the diagnostic trouble codes (DTCs) that your bike’s onboard diagnostic system (OBD) generates. One of the most common DTCs that Harley-Davidson owners encounter is code 81307.

Harley-Davidson code 81307 is related to the rear hand controls of your bike’s audio system. Specifically, this code indicates that the rear hand controls have been shorted low. This can be caused by a variety of issues, such as a loose wire, a damaged control module, or a malfunctioning switch. If you encounter this code, it is important to address the issue promptly to ensure that your bike’s audio system functions properly.

Understanding Harley Error Code 81307

If you are experiencing issues with your Harley, one of the first things to check is the error code. Harley Error Code 81307 is a common issue that riders face, and it can be frustrating to diagnose. In this section, we will discuss the symptoms, diagnosis, and troubleshooting steps for Harley Error Code 81307.

Symptoms and Diagnosis

Harley Error Code 81307 is typically caused by a shorted low in the rear hand controls. This can cause the audio system to malfunction, and you may experience issues with the rear hand controls. If you are experiencing any of the following symptoms, it may be a sign that you are dealing with Harley Error Code 81307:

  • Audio system not working properly
  • Rear hand controls not functioning
  • Shorted low in the rear hand controls

To diagnose Harley Error Code 81307, you will need to use a diagnostic tool. The diagnostic tool will help you identify the specific issue that is causing the error code. Once you have identified the issue, you can move on to troubleshooting.

Troubleshooting Steps

To troubleshoot Harley Error Code 81307, you will need to follow these steps:

  1. Check the wiring: The first step is to check the wiring in the rear hand controls. Make sure that all the wires are properly connected and that there are no loose connections.

  2. Check the LHCM: The LHCM (Left Hand Control Module) may be the cause of the issue. Check for any faults in the LHCM, and replace it if necessary.

  3. Check the onboard computer: If the LHCM and wiring are not the issue, the problem may be with the bike’s onboard computer. Check for any faults in the computer, and replace it if necessary.

  4. Seek professional help: If you are unable to diagnose or troubleshoot the issue on your own, it may be time to seek professional help. A Harley technician can help you identify the issue and provide a solution.

In conclusion, Harley Error Code 81307 can be a frustrating issue to deal with, but it is important to diagnose and troubleshoot the issue as soon as possible. By following the steps outlined in this section, you can identify the issue and get your Harley back on the road in no time.

Electrical System Fundamentals

If you’re experiencing Harley code 81307, it’s likely related to your electrical system. Understanding the basics of your Harley’s electrical system can help you diagnose and potentially fix the issue.

Battery and Charging

Your Harley’s battery and charging system work together to provide power to your bike. The battery stores energy and the charging system replenishes it as you ride. If your battery is not holding a charge or your charging system is not working properly, you may experience issues with your Harley’s performance.

To check your battery, use a voltmeter to measure its voltage. A healthy battery should read above 12.2 volts. If your battery reads low, try slow charging it for 12 hours and re-test. If your battery is still not holding a charge, it may need to be replaced.

To check your charging system, keep the voltmeter connections in place and start your engine. The charging system should now be working, and your battery voltage should increase to above 14 volts. If it does not, there may be an issue with your charging system that needs to be addressed.

Ignition System

The ignition system is responsible for starting your Harley and keeping it running. It works in conjunction with your battery and charging system to provide the necessary power to your engine.

The ignition system includes several components, including the ECU and CKP. The ECU, or engine control unit, is responsible for monitoring and controlling your engine’s performance. The CKP, or crankshaft position sensor, provides information to the ECU about the position of your engine’s crankshaft.

If you’re experiencing issues with your Harley’s ignition system, it may be related to one of these components. It’s important to have a professional diagnose and repair any issues with your ignition system to ensure your Harley is running safely and efficiently.

By understanding the fundamentals of your Harley’s electrical system, you can better diagnose and potentially fix issues with your bike. If you’re experiencing Harley code 81307 or other electrical issues, it’s important to have a professional diagnose and repair the issue to ensure your safety on the road.

Sensor and Circuit Specifics

Harley code 81307 refers to a shorted low in the rear hand controls. This code can be triggered by a variety of sensors and circuits in your Harley-Davidson motorcycle. In this section, we will explore the MAP and TPS sensors, as well as the HO2S and CKP sensors that can be involved in this code.

MAP and TPS Sensors

The MAP (Manifold Absolute Pressure) sensor measures the pressure inside the intake manifold, while the TPS (Throttle Position Sensor) measures the position of the throttle. These two sensors work together to determine the amount of air and fuel that enters the engine. If the MAP or TPS sensors are faulty or malfunctioning, they can trigger code 81307.

HO2S and CKP Sensors

The HO2S (Heated Oxygen Sensor) measures the amount of oxygen in the exhaust gases and sends this information to the ECU (Engine Control Unit). The CKP (Crankshaft Position) sensor measures the position and speed of the crankshaft. These sensors work together to ensure the engine is running smoothly and efficiently. If the HO2S or CKP sensors are faulty or malfunctioning, they can also trigger code 81307.

It is important to note that code 81307 can be triggered by a variety of sensors and circuits, not just the ones mentioned above. If you are experiencing this code, it is recommended to have your motorcycle diagnosed by a professional mechanic to determine the root cause of the issue.

In summary, code 81307 can be caused by a variety of sensors and circuits in your Harley-Davidson motorcycle. The MAP and TPS sensors, as well as the HO2S and CKP sensors, are just a few examples of the sensors that can trigger this code. If you are experiencing this code, it is important to have your motorcycle diagnosed by a professional mechanic to determine the root cause of the issue.

ABS and Stability Control

If you are experiencing code 81307 on your Harley, it means that there is an issue with the ABS and Stability Control system. This error code may be caused by a variety of issues, such as faulty sensors, damaged wiring, or low voltage. In this section, we will discuss some common causes of ABS and Stability Control issues and potential solutions.

ABS Error Codes and Solutions

When your ABS system is not functioning properly, it may be accompanied by an error code. Some common ABS error codes include:

  • C1001: Front ABS sensor circuit low or open
  • C1002: Front ABS sensor circuit high or shorted
  • C1011: Rear ABS sensor circuit low or open
  • C1012: Rear ABS sensor circuit high or shorted

If you are experiencing any of these error codes, it is important to diagnose and fix the issue as soon as possible to ensure your safety while riding. Some potential solutions include:

  • Checking the sensor wiring and connections for damage or corrosion
  • Replacing faulty sensors
  • Checking the ABS pump motor for proper operation
  • Checking the ABS module for proper operation

Wheel Speed Sensors

Wheel speed sensors are a critical component of the ABS system. These sensors detect the speed of each wheel and send this information to the ABS module. If the ABS module detects a discrepancy in wheel speed, it may activate the ABS system to prevent wheel lock-up.

If your ABS system is not functioning properly, it may be caused by a faulty wheel speed sensor. Some common symptoms of a faulty wheel speed sensor include:

  • ABS warning light on
  • Traction control warning light on
  • Stability control warning light on
  • Speedometer not working

To diagnose a faulty wheel speed sensor, you can use a multimeter to test the resistance of the sensor. If the sensor is not within the specified range, it may need to be replaced.

In conclusion, if you are experiencing code 81307 on your Harley, it is important to diagnose and fix the issue as soon as possible to ensure your safety while riding. By checking the ABS error codes and wheel speed sensors, you can pinpoint the issue and take the necessary steps to resolve it.

Control Modules and Communication

When it comes to Harley codes, one of the most important things to understand is how your bike’s control modules communicate with each other. In particular, the BCM (Body Control Module) and ECU (Engine Control Unit) are two key components that work together to keep your bike running smoothly.

BCM and Security Functions

The BCM is responsible for a number of important functions, including controlling the security system on your bike. If you’re experiencing issues with your bike’s security system, it’s possible that there’s a problem with the BCM.

One common issue that can arise with the BCM is a lost or weak communication signal. This can cause a range of problems, from issues with your bike’s odometer to problems with the fuel injection system. If you’re experiencing any of these issues, it’s important to have your bike’s BCM checked out by a qualified mechanic.

ECU Communication and Errors

The ECU is responsible for controlling a range of engine functions, including fuel injection and ignition timing. If you’re experiencing issues with your bike’s engine, it’s possible that there’s a problem with the ECU.

One common issue that can arise with the ECU is a communication error. This can cause a range of problems, from issues with your bike’s performance to problems with the transmission. If you’re experiencing any of these issues, it’s important to have your bike’s ECU checked out by a qualified mechanic.

Overall, understanding how your bike’s control modules communicate with each other is essential for keeping your bike running smoothly. Whether you’re experiencing issues with your bike’s security system or problems with its engine, having a qualified mechanic check out your bike’s BCM and ECU can help you get back on the road in no time.

Diagnostic Trouble Codes (DTCs)

If you own a Harley-Davidson motorcycle, you may encounter Diagnostic Trouble Codes (DTCs) at some point. These codes are alphanumeric codes that are generated by the onboard diagnostic system of your Harley-Davidson motorcycle when it detects one or more malfunction sensors, circuits, or components.

Common DTCs and Their Meanings

Here are some common DTCs and their meanings that you may encounter while riding your Harley-Davidson motorcycle:

  • P0031: Oxygen (O2) Sensor Circuit Low Voltage (Bank 1, Sensor 1)
  • P0032: Oxygen (O2) Sensor Circuit High Voltage (Bank 1, Sensor 1)
  • P0051: Oxygen (O2) Sensor Heater Control Circuit Low (Bank 2, Sensor 1)
  • P0052: Oxygen (O2) Sensor Heater Control Circuit High (Bank 2, Sensor 1)

If you encounter any of these DTCs, it is recommended that you take your motorcycle to a Harley-Davidson dealership or a qualified mechanic for repair. These codes can indicate issues with your motorcycle’s oxygen sensor circuit or heater control circuit, which can impact your motorcycle’s performance.

Interpreting Advanced Diagnostic Codes

Harley-Davidson motorcycles also have advanced diagnostic codes that can provide more detailed information about your motorcycle’s performance. These codes can be accessed using a Harley-Davidson Digital Technician (HDT) or a Harley-Davidson Digital Technician II (HDT II).

If you encounter an advanced diagnostic code, it is recommended that you take your motorcycle to a Harley-Davidson dealership or a qualified mechanic for repair. These codes can provide more detailed information about your motorcycle’s performance and can help diagnose issues that may not be apparent with standard DTCs.

In conclusion, if you encounter any DTCs while riding your Harley-Davidson motorcycle, it is recommended that you take your motorcycle to a Harley-Davidson dealership or a qualified mechanic for repair. These codes can indicate issues with your motorcycle’s performance and can impact your riding experience.

Maintenance and Preventive Measures

When it comes to maintaining your Harley-Davidson, regular service intervals are crucial to keep your bike running smoothly and prevent issues like code 81307. Here are some key maintenance tips to keep in mind:

Regular Service Intervals

Harley-Davidson recommends that you follow the service intervals outlined in your owner’s manual. This typically involves getting regular oil changes, checking and replacing filters, and inspecting and lubricating various components. By keeping up with these service intervals, you can help prevent issues like code 81307 from occurring.

Upgrades and Modifications

If you’re looking to upgrade or modify your Harley-Davidson, it’s important to do so carefully and with the help of a professional. Upgrades and modifications can affect the way your bike runs, and if done incorrectly, can lead to issues like code 81307. Make sure to research any upgrades or modifications thoroughly before making any changes, and consult with a professional if you’re unsure about anything.

In addition to regular maintenance and careful upgrades, there are a few other preventive measures you can take to help prevent code 81307 and other issues from occurring. These include:

  • Keeping your battery charged and in good condition
  • Checking your bike’s wiring and connections regularly
  • Avoiding harsh riding conditions, such as extreme heat or cold
  • Using high-quality parts and accessories when making upgrades or modifications

By following these maintenance and preventive measures, you can help keep your Harley-Davidson running smoothly and avoid issues like code 81307.

Troubleshooting and Repair Strategies

Step-by-Step Repair Guide

If your Harley-Davidson is showing the error code 81307, it means that the rear hand controls have shorted low. Here are some steps you can take to troubleshoot and repair this issue:

  1. Check the wiring: Look for any damaged or frayed wires that may be causing the short. If you find any, replace them.
  2. Check the hand controls: Make sure the hand controls are functioning properly. If they are not, replace them.
  3. Check the fuses: Check the fuses for the rear hand controls and make sure they are not blown. If they are, replace them.
  4. Clear the code: Once you have resolved the issue, clear the error code by performing the odometer self-diagnostics test.

When to Seek Professional Help

If you are unsure about any of the steps outlined above or do not feel comfortable working on your Harley-Davidson, it is best to seek professional help. A certified Harley-Davidson mechanic will have the expertise and tools needed to diagnose and repair any issues with your motorcycle.

Remember, safety should always be your top priority when working on your Harley-Davidson. Always wear appropriate safety gear and follow all manufacturer instructions and guidelines.

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