Input speed sensors and turbine speed sensors measure the transmission input speed. They determine how fast the input shaft is spinning and send their readings to the powertrain control module (PCM). Based on the revolutions per minute (RPM) from the sensors, the PCM ensures that the transmission shifts into the right gear at the correct time.
If the PCM detects zero voltage output from the input/turbine speed sensor B, it will log a P2767 code.
What Does the P2767 Code Mean?
The diagnostic trouble code (DTC) P2767 indicates “Input/Turbine Speed Sensor B Circuit No Signal.” It refers to the secondary input speed sensor.
In most vehicles, the input/turbine speed sensor B is located at the bell housing. Some are secured with a bolt or stud, while others are directly threaded into the transmission case.
The only difference between input speed sensors and turbine speed sensors is their names. Otherwise, they perform the same role.
The input/turbine speed sensors convert the RPM into a voltage signal that they send to the PCM. The PCM compares transmission input/turbine speed with engine RPM speed, engine load percentage, and transmission output speed. This helps it determine the best input RPM speed.
If the voltage in the system circuit is not the same as the expected input/turbine speed or the voltage value programmed in the PCM’s memory, the controller will set code P2767.
Note: The definition of code P2767 can differ depending on the vehicle manufacturer. Check the appropriate repair manual or repair database for the exact code definition.
What are the Common Causes of the P2767 Code?
- Faulty input/turbine speed sensor
- Failed valve body or electrohydraulic control unit
- TCM failure
- Problem with the wiring of the input speed sensor
What are the Common Symptoms of the P2767 Code?
- Illuminated check engine light
- Higher fuel consumption and wastage
- Transmission doesn’t shift between gears correctly
- Vehicle stuck in “limp” mode
How to Diagnose the P2767 Code
The P2767 code is a generic powertrain code that can appear in various makes and models. There is no single solution to all cases. A diagnostic process that works with some vehicles may not apply to others.
If you’re not confident about conducting diagnostic tests on your vehicle, it’s a good idea to bring it to a professional mechanic. Otherwise, you can perform the diagnosis yourself.
How to Fix the P2767 Code
Attempting to fix a P2767 code can become a challenging task if you don’t have the right tools and know-how to test the input/turbine speed sensor. In most cases, it’s best to leave the job to professionals.
But if you have the necessary tools, technical knowledge, and hands-on experience to test and replace the input speed sensor or turbine speed sensor, then you can address the code on your own. Just make sure you follow vehicle-specific instructions. Consider consulting a repair manual or online repair database with guides that focus on your vehicle before you get started.
Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic. The accuracy and timeliness of the information may change from the time of publication.