OBD-II codes are standardized codes that are set by the car’s computer when it detects a fault. They make it easier to diagnose and fix issues. If your car’s computer logged the P0717 code, you’ve come to the right guide. What is code P0717, what causes it, and how does it manifest? Read on to learn the answers to these questions and more.
What Does the P0717 Code Mean?
Diagnostic trouble code (DTC) P0717 stands for “Input/Turbine Speed Sensor “A” Circuit No Signal.” It indicates one of your car’s computers perceives an issue with the speed sensor or its circuit.
The input speed sensor (sometimes referred to as the turbine speed sensor) tracks the transmission input speed. The powertrain control module (PCM) or transmission control module (TCM) identifies the transmission input speed as revolutions per minute (RPM).
RPMs are transferred from the engine to the transmission while a reluctor wheel (often mounted on the input shaft) spins and passes close to the tip of the sensor. The circuit is interrupted when the grooves or notches pass by the sensor. This causes an electronic pattern.
Code P0717 will be stored if the PCM detects the input sensor signal is missing for a given period of time.
A Quick Note About 700 Series Codes
700 series codes like P0717 are usually transmission-related codes stored by the ECM or PCM. The ECM controls only the engine, and on vehicles with automatic transmissions, there will be a transmission control module (TCM) that communicates with the ECM. A PCM (Powertrain Control Module) controls both the engine and the transmission.
Thus, in these articles, we refer to the ECM/PCM when we discuss the primary on-board computer, but a growing number of vehicles have separate engine and transmission control modules that communicate with each other over the CAN bus. Therefore, you may have an ECM and a TCM but the ECM may display codes that are TCM-related, such as this one.
Note: The definition of code P0717 may be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.
What are the Possible Causes of the P0717 Code?
Bear in mind that the P0717 code can be caused by multiple or different factors depending on the make and model of your vehicle. Here are the common causes of the P0717 code:
- Malfunctioning input speed sensor
- An issue with the speed sensor circuit
- An issue with the powertrain control module or transmission control module
What are the Common Symptoms of P0717 Code?
Depending on the severity of the problem, you may encounter one of these symptoms:
- Illuminated check engine light
- Possible shifting problems
How to Diagnose the P0717 Code
Due to the varying causes of code P0717, you will find different ways of diagnosing it online. This can make it difficult to figure out how to deal with the problem properly. To avoid making costly mistakes, consider bringing your car to a certified mechanic or refer to the vehicle owner’s manual.
How to Fix the P0717 Code
There are different methods of clearing the P0717 code and not everything you read or watch online will apply to your situation. Because there are numerous car manufacturers in business today, most vehicles have features and functions unique to their make. Some components are assembled differently, which can affect how certain issues come about.
To fix the P0717 code, you must determine its exact cause. Then, determine the fix that is appropriate not only for the triggering issue but also for your vehicle’s specific year, make, and model.
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Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic.