P2649 Honda: A Comprehensive Guide to Understanding, Testing, and Resolving Sensor and Wiring Issues

Welcome to Fault Code with Hamza! In this video, we’ll be addressing a common issue with the Honda Accord 2016 model – the check engine light. I have diagnosed the fault and will guide you through the process of troubleshooting and fixing it.

The fault code that appeared on the scan is GP 2649, indicating an issue with the Rocker and Oil Control Silent Circuit. Our objective is to clear this fault code by addressing the underlying problem.

Understanding the Wiring and Sensor

After diagnosing the fault code, our first step is to check the wiring and sensor. This is crucial as the fault may not necessarily be with the sensor but with the wiring itself.

By analyzing the wiring diagram and examining the components, we can identify the specific areas that require attention. In this case, the wiring of the rocker mango, oil pressure switch, and their respective connections with the computer and ground are scrutinized.

Testing the Components

Using a multimeter, we proceed to test the voltage and grounding of the oil pressure switch and rocker mango. This method allows us to determine the functionality and integrity of the components.

Upon thorough examination, it was revealed that a wiring issue, rather than a faulty sensor, was causing the fault code. Specifically, damage to the wiring due to a previous accident was the root cause of the problem.

Resolution and Verification

After addressing the damaged wiring and ensuring proper connections, we re-scan the vehicle to check for the fault code. As a result of rectifying the wiring issue, the fault code is successfully cleared, and the check engine light is no longer illuminated.

Key Takeaways

It is essential to emphasize the importance of meticulously inspecting the wiring and sensor components when encountering fault codes in vehicles. By following a systematic approach of diagnosis, testing, and resolution, one can effectively identify and address car faults.


In conclusion, the case study of the Honda Accord 2016 model serves as a reminder of the significance of thorough and comprehensive fault diagnosis. By understanding the intricacies of vehicle components and employing diagnostic techniques, one can effectively resolve issues and ensure optimal car performance.

If you found this guide helpful, feel free to share it with friends who might benefit from this information. Stay tuned for more insightful content on Fault Code with Hamza!

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top