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Harley Code P0562 Gets Completely Explained

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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! I spend a lot of time trying to cover every angle in my articles, but if you need more info feel free to ask in the comments or contact me directly. I hope you enjoy the read, and if you find it helpful, please share it via your preferred social media and like my Facebook page as it really helps independent creators like me. Cheers!

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In the world of motorbikes, particularly in the Harley Davidson community, encountering error codes is not uncommon. One such error that has been a frequent topic of conversation among Harley enthusiasts is the Harley Code P0562. This article aims to delve into this specific code, providing an expansive understanding of what it means, what can cause it, and possible steps to rectify it. Also, should you be concerned? Keep reading to find out.

What Does Harley Code P0562 Mean?

Harley Code P0562 is an error code that signifies “System Voltage Low”. This specific trouble code is set when the system voltage at the Engine Control Unit (ECU) terminal falls below the threshold voltage while the engine is running. Although the exact threshold voltage is not explicitly stated by Harley Davidson, it is typically assumed to be around 10.5 Volts.

Related: How Many Volts Is A Harley Davidson Motorcycle Battery?

What Can Cause This Code?

There are multiple potential causes for the Harley Code P0562. The most common causes include:

  1. A Blown Main Fuse: A blown main fuse can result in this error code. However, this isn’t a random occurrence and usually indicates an underlying issue such as a damaged wire or a faulty Voltage Regulator.
  2. Faulty Wiring Connections at the Voltage Regulator: Another common cause of this code is faulty Wiring connections at the Voltage Regulator. The wires should be clean and tight, and any doubts should be addressed by disconnecting and cleaning the terminals and connections.
  3. Faulty Stator or Rotor: A malfunctioning Stator or Rotor in the Charging System Alternator can lead to this code. A Stator failure can be diagnosed by low or zero AC Voltage readings and infinite resistance readings. On the other hand, if the AC Voltage test is bad but the Ohmmeter tests are good, then the Rotor has failed.
  4. Failed Voltage Regulator: If the Rotor, Stator, Wiring, and Fuse are all in good condition but the code still persists, then it is likely that the Voltage Regulator has failed.

Related reads:
> How To Test A Stator On A Motorcycle (Like A Pro) 101
> What Is A Stator On A Motorcycle? + What You Need To Know
> Harley Davidson Stator Replacement Cost Overview (+DIYable?)

Step-By-Step Diagnostics Guide

  1. Initial Voltage Check:
    • Procedure: Start by checking the battery voltage with a multimeter. You should see around 12.6 volts when the bike is off and 13.5 to 14.5 volts when the engine is running at idle.
  2. Check Ground and Power Connections:
    • Procedure: Inspect the ground wire from the battery to the engine and the power connections at the voltage regulator. Look for loose, corroded, or damaged wires.
  3. Inspect the Charging System:
    • Procedure: With the engine running, measure the output from the stator at the voltage regulator. You’re looking for consistent AC voltage that increases with engine RPM.
  4. Voltage Regulator and Stator Test:
    • Procedure: Test the voltage regulator and stator for proper function. A failing stator or voltage regulator can lead to low system voltage.
  5. ECM and Ignition Switch Check:
    • Procedure: Verify the voltage at ECM pin #13 is above 12.2 V at idle, as suggested by “stever975” on 1130cc. A drop below this threshold can trigger the P0562 code.

Should You Be Concerned?

While any error code merits attention, the level of concern largely depends on the degree of disruption caused by the error. In the case of Harley Code P0562, the error can potentially impact the performance of your Harley Davidson motorcycle. It may lead to issues with the charging system, affect the battery’s performance, and even lead to engine problems in severe cases. As such, it is advisable to address this error as soon as it appears.

What Does The Community Say?

Discussion threads on various Harley Davidson forums provide valuable insight into the experiences of fellow Harley owners who have encountered this code. Many have observed that the check engine light and battery light briefly came on several times before the P0562 code was flagged. In many cases, the issue was resolved by checking and tightening ground wires and cleaning connectors on the regulator.

Example #1

A forum user, “Casey0211,” experienced the P0562 code shortly after a dealer installed a new starter clutch. Despite battery and stator replacements, the issue persisted until a thorough check revealed a faulty voltage regulator, underscoring the importance of comprehensive diagnostics beyond initial assumptions.

Example #2

04nightrain” from HD Forums faced the P0562 code after a battery replacement. The lights came back on within a short ride, leading to a discovery of a failed voltage regulator, highlighting the need for a full charging system evaluation even after replacing seemingly faulty components.

Are Any Repairs Necessary To Fix The Code?

The necessity for repairs depends on the root cause of the P0562 code. If the cause is a blown main fuse, replacing the fuse and addressing the underlying issue causing the fuse to blow would be necessary. Similarly, faulty wiring connections at the Voltage Regulator would require cleaning or possibly replacing the wires. If the Stator or Rotor has failed, replacement of the failed component would be essential. A failed Voltage Regulator would also need to be replaced.

Here’s a break down of all of the codes (including this one) in one place:
– Unlock the Power of Harley Diagnostic Codes (PDF Included) (theseasonedwrench.com)

How Can You Clear The Code?

Clearing the P0562 code would require resolving the underlying issue first. Once the cause has been addressed, the code can be cleared using a Digital Volt Ohm Meter (DVOM) or a suitable diagnostic tool. However, it is advisable to seek professional assistance if you’re unfamiliar with handling such equipment or tasks.

The Harley trouble codes you should be familiar with:
> Most Common Harley Davidson Diagnostic Codes Get Explained
> Harley Code P1356 Gets Completely Explained
> Harley Code P1510 Gets Completely Explained
> Harley Code P1632 Gets Completely Explained
> The U0184 Harley Code Gets Completely Explained
> The P2300 Harley Code Gets Completely Explained
> Harley Code B2141 Gets Completely Explained
> The U0141H Harley Code Gets Completely Explained

How Common Is Code P0562?

While it’s difficult to quantify the exact frequency of occurrence, discussions on Harley Davidson community forums suggest that the P0562 code is fairly common among Harley owners. It is worth noting that the frequency of this code can vary depending on factors such as the model of Harley Davidson motorcycle, its age, and how it’s been maintained.

In conclusion, while encountering the Harley Code P0562 can be unnerving, understanding the code and its potential causes can empower you to address it effectively. As with any vehicle issue, it’s always best to seek professional advice if you’re unsure about diagnosing or rectifying the problem. – and remember, always keep your technical resources handy:

> Torque Specs for Harley Davidson: Ultimate Guide (PDF)
> Complete Harley Davidson Tire Size Chart (PDF)

Wrapping Up

Diagnosing the Harley Code P0562 requires a methodical approach, starting from basic voltage checks to more in-depth inspections of the charging system and electrical connections. Real-world examples from seasoned riders underscore the variety of potential causes, from simple loose connections to more complex issues like a failing stator or voltage regulator. By following these steps and considering the experiences of others, you can more accurately diagnose and resolve the P0562 code, ensuring your Harley’s electrical system is functioning optimally.

Frequently Asked Questions

What does the Harley code P0562 indicate?

The P0562 code on a Harley-Davidson motorcycle indicates a low voltage issue. This code is triggered when the motorcycle’s electrical system voltage falls below a specific threshold, typically signaling a problem with the charging system, such as the battery, alternator, or related electrical connections.

What are the symptoms of Harley code P0562?

Symptoms of code P0562 can include the motorcycle’s inability to start, dimming lights, weak horn, or the electronic systems performing poorly. The motorcycle might also exhibit a decrease in overall performance. Additionally, the check engine light may activate when this code is present.

Is it safe to ride a Harley with code P0562?

Riding a Harley with code P0562 is not advisable. Low voltage can affect critical systems, including the ignition and lights, potentially leading to unsafe riding conditions.

Can battery issues cause Harley code P0562?

Yes, battery issues are a common cause of the P0562 code. A weak or failing battery may not hold a charge, leading to low voltage levels in the motorcycle’s electrical system.

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