If you own a motorcycle, you may have encountered an error code P0690 on your dashboard.
This error code indicates an issue with the ECM/PCM power relay sense circuit, which is responsible for regulating the power supply to your motorcycle’s engine control module.
If not addressed promptly, this issue can lead to serious engine problems and even cause your motorcycle to stall while riding.
The ECM/PCM power relay sense circuit high error code is a common problem among motorcycle owners, and it can be caused by a variety of factors.
Some of the most common causes include a faulty power relay, damaged wiring, or a malfunctioning engine control module.
Fortunately, this error code can be easily diagnosed and fixed by a qualified mechanic with the right tools and expertise.
Understanding Error Code P0690
If you own a motorcycle, you may have encountered Error Code P0690 at some point.
This code indicates that there is an issue with the ECM/PCM Power Relay Sense Circuit, which is responsible for monitoring the voltage of the power supply to the ECM/PCM.
In this section, we will help you understand what this error code means and what you can do to fix it.
When the ECM/PCM Power Relay Sense Circuit detects a high voltage, it triggers Error Code P0690.
This could be caused by a faulty relay, a damaged wire, or a problem with the ECM/PCM itself.
The most common cause of this error code is a bad relay. A bad relay can cause the voltage to spike, which triggers the error code.
To diagnose the issue, you will need to use a diagnostic scanner to read the error code and determine the cause of the problem.
Once you have identified the issue, you can take steps to fix it. If the problem is a bad relay, you will need to replace it.
If the issue is a damaged wire, you will need to repair or replace the wire.
If the problem is with the ECM/PCM, you will need to have it repaired or replaced.
In summary, Error Code P0690 indicates a problem with the ECM/PCM Power Relay Sense Circuit on your motorcycle.
The most common cause of this error code is a bad relay, but it could also be caused by a damaged wire or a problem with the ECM/PCM itself.
To fix this issue, you will need to diagnose the problem using a diagnostic scanner and take appropriate steps to repair or replace the faulty component.
Diagnosing ECM/PCM Power Relay Sense Circuit
If you are experiencing Error Code P0690 on your motorcycle, it is likely that there is an issue with the ECM/PCM Power Relay Sense Circuit.
In order to diagnose this issue, you will need to follow a few steps:
- Check the Power Relay
The first step in diagnosing the ECM/PCM Power Relay Sense Circuit is to check the power relay.
To do this, you will need to use a voltmeter to check the voltage at the relay.
If there is no voltage present, then the relay may be faulty and will need to be replaced.
- Check the Wiring
If the power relay is functioning correctly, the next step is to check the wiring.
You will need to inspect the wiring for any signs of damage or wear.
If you find any damage, you will need to repair or replace the wiring.
- Check the ECM/PCM
If the power relay and wiring are both functioning correctly, the issue may be with the ECM/PCM itself.
You will need to use a diagnostic tool to check the ECM/PCM for any errors or faults.
If you find any issues, you may need to replace the ECM/PCM.
It is important to note that diagnosing the ECM/PCM Power Relay Sense Circuit can be a complex process.
If you are not confident in your ability to diagnose the issue, it is recommended that you seek the assistance of a professional mechanic.
Common Causes of Error Code P0690
If you encounter Error Code P0690 on your motorcycle, it means that the Engine Control Module (ECM) or Powertrain Control Module (PCM) has detected a high voltage in the ECM/PCM power relay sense circuit.
This can be caused by a variety of issues, including:
- Faulty ECM/PCM power relay
- Wiring issues in the ECM/PCM power relay sense circuit
- Short circuit in the ECM/PCM power relay sense circuit
- Failed ECM/PCM
A faulty ECM/PCM power relay is the most common cause of Error Code P0690.
This relay is responsible for supplying power to the ECM/PCM, and if it fails, the voltage in the circuit can become too high, triggering the error code.
Wiring issues or a short circuit in the circuit can also cause the voltage to spike, leading to the error code.
If you have ruled out the power relay and wiring issues, it is possible that the ECM/PCM itself has failed.
This is a less common cause of the error code, but it is still a possibility.
It is important to address Error Code P0690 promptly, as it can cause issues with your motorcycle’s performance and potentially lead to further damage if left unaddressed.
If you are unsure how to diagnose or fix the issue, it is recommended to seek the assistance of a professional mechanic.
Step-by-Step Troubleshooting Guide
If you’re experiencing Error Code P0690 on your motorcycle, don’t panic.
Follow this step-by-step troubleshooting guide to help diagnose and fix the issue.
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Check the ECM/PCM power relay fuse: The first thing you should check is the fuse for the ECM/PCM power relay.
If the fuse is blown, replace it and see if the error code disappears.
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Inspect the ECM/PCM power relay: If the fuse is not the issue, inspect the ECM/PCM power relay.
Look for any signs of damage or corrosion. If you find any issues, replace the relay.
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Test the ECM/PCM power relay: Use a multimeter to test the ECM/PCM power relay.
Follow the manufacturer’s instructions to ensure proper testing. If the relay fails the test, replace it.
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Check the ECM/PCM power relay wiring: Inspect the wiring for the ECM/PCM power relay.
Look for any signs of damage or corrosion. If you find any issues, repair or replace the wiring.
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Test the ECM/PCM power relay sense circuit: Use a multimeter to test the ECM/PCM power relay sense circuit.
Follow the manufacturer’s instructions to ensure proper testing. If the circuit fails the test, repair or replace it.
By following these steps, you should be able to diagnose and fix Error Code P0690 on your motorcycle.
If you’re unsure about any of the steps or need further assistance, consult a professional mechanic or refer to your motorcycle’s service manual.
Repair and Solution Strategies
If you experience an error code P0690 on your motorcycle, there are several repair and solution strategies that you can try.
Here are some of the most common ones:
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Check the power relay: The first thing you should do is check the power relay.
Make sure it is properly installed and functioning correctly. If it is not, replace it with a new one.
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Check the wiring: Inspect the wiring for any damage or loose connections.
Repair or replace any damaged wiring and ensure that all connections are tight.
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Check the battery: A weak or dead battery can cause this error code. Check the battery voltage and charge it if necessary.
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Check the ECM/PCM: If all else fails, you may need to replace the ECM/PCM.
This should only be done as a last resort after all other solutions have been tried.
It is important to note that error code P0690 can be caused by a variety of factors, and these solutions may not work for everyone.
If you are unsure about how to proceed, it is best to seek the advice of a professional mechanic.
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