Chevrolet Code P1915, a problem in the manual shift shaft IMS switch assembly, can cause a transmission issue, resulting in the internal mode switch not indicating Park or Neutral during start. This issue can be caused by the engine speed being less than 50 RPM for more than 1 second, between 50-480 RPM for more than 1 second, or greater than 525 RPM for more than 2 seconds, as well as the transmission input shaft speed being 200 RPM or greater. To solve this issue, it is important to understand the causes, how it impacts the vehicle, and the possible solutions.
💥See also: Chevrolet Code P0116
Causes and Solutions for Chevrolet Code P1915
| Cause | Solution |
|---|---|
| The engine speed is less than 50 RPM for more than 1 second. | Check the engine’s idle speed and adjust accordingly. |
| The engine speed is 50-480 RPM for more than 1 second. | Check the engine’s RPM readings and adjust accordingly. |
| The engine speed is greater than 525 RPM for more than 2 seconds. | Check the engine’s RPM readings and adjust accordingly. |
| The transmission input shaft speed is 200 RPM or greater. | Check the transmission input shaft speed and adjust accordingly. |
When troubleshooting Chevrolet Code P1915, it is important to understand the underlying causes and the associated solutions. This code indicates that the internal mode switch does not indicate Park/Neutral (P/N) when the engine is started. The most common causes are the engine speed being less than 50 RPM for more than 1 second, between 50-480 RPM for more than 1 second, or greater than 525 RPM for more than 2 seconds, and the transmission input shaft speed being 200 RPM or greater. Potential solutions to fix this issue involve checking and adjusting the engine’s idle speed, RPM readings, and transmission input shaft speed as needed.
🚀Recommended article: Chevrolet Code P1448
Engine Idle Speed
When the engine runs less than 50 RPM for more than 1 second, the engine’s idle speed must be checked and adjusted as needed. This can be done by referring to the car’s manual or consulting a professional mechanic.
Engine RPM Readings
When the engine runs between 50-480 RPM for more than 1 second or more than 525 RPM for more than 2 seconds, the engine’s RPM readings must be checked and adjusted accordingly. This can also be done by consulting a professional mechanic or referring to the car’s manual.
Transmission Input Shaft Speed
The transmission input shaft speed must also be checked and adjusted if running at 200 RPM or greater. This can be done by consulting a professional mechanic or referring to the car’s manual.
Conclusion
Chevrolet Code P1915 is a common issue experienced by many car owners, and understanding the potential causes and solutions is important. To fix this issue, it is important to check and adjust the engine’s idle speed, RPM readings, and transmission input shaft speed as needed. By understanding the potential causes and solutions of Chevrolet Code P1915, car owners can take the necessary steps to ensure their vehicles run properly.
🚨You may be interested in: Chevrolet Code P0AC4
Was this page helpful?