P1717 code — how to fix error fast

Facing an OBD2 code like P1717 is often bothersome for drivers, and if you already retrieved this code, the only thing you can do is get to the fixing part as soon as possible. We know it’s a great drag, but at least that way you can save your car’s transmission from unrepairable damage.

Since we realized how ignorant most drivers are of the P1717 code meaning, we decided to create an all-in-one guide. So, stay tuned if you wish to find out about the main reasons behind the code, ways of diagnosing it, and removing it as we’ll lay out the solutions and preventive measures.

Why you can trust REREV’s OBD2 code advice: Our automotive expert researchers with experienced mechanics undertakes a thorough research methodology to deliver precise insights on OBD codes. Find out more about OBD2 codes research process..

What does the P1717 code mean?

The P1717 code indicates that the car’s transmission system is experiencing a problem with the “Input Shaft Speed Sensor” (ISS). The ISS is responsible for monitoring the rotational speed of the transmission’s input shaft and sending that information to the car’s onboard computer.

If the ISS isn’t working correctly, the computer won’t be able to calculate the correct gear ratio, which can cause several problems, including poor shifting, reduced fuel efficiency, and even engine damage.

What causes the P1717 code?

The code P1717 usually appears because of the ISS sensor fault, but there are several other reasons behind it as well. It all depends on the specific situation for your car, which is why we wanted to give you an overview of each of the possible causes:

Faulty input shaft speed sensor

The most common cause of the P1717 code is a faulty input shaft speed sensor. The sensor can wear out over time, become damaged, or become contaminated with debris. When this happens, the sensor won’t be able to send accurate information to the car’s onboard computer, which can cause the code to appear.

Wiring problems

Wiring problems are another common cause of the P1717 code. If the wires that connect the ISS to the car’s computer become damaged, corroded, or disconnected, the computer won’t be able to receive the information it needs. This can cause the code to appear.

Transmission fluid issues

Low transmission fluid levels or dirty transmission fluid can also cause the P1717 code to appear. If the fluid is low, the ISS won’t be able to measure the input shaft’s rotational speed accurately. Dirty fluid can also interfere with the sensor’s accuracy.

Which car models does the P1717 code affect the most?

The P1717 code can appear on any car with an automatic transmission, but some models are more susceptible than others. Some of the car models that are most affected by the P1717 code include:

• Ford Focus: These cars have been known to experience problems with the automatic transmission slipping or failing to shift properly. Some Focus owners have reported that these issues were caused by a faulty speed sensor or other transmission components that could potentially trigger the P1717 code.
• Nissan Altima; Some owners have reported problems with the car jerking or hesitating while shifting gears, which can be caused by a malfunctioning speed sensor or other transmission components. Like other car models, these issues could potentially trigger the P1717 code.
• Chevy Malibu: The Chevrolet Malibu has had a few transmission-related recalls in recent years, which may indicate that there are some issues with this car model’s automatic transmission. Some owners have reported problems with shifting or slipping gears, which could be related to a faulty input/turbine speed sensor circuit that triggers the P1717 code.

How to diagnose the P1717 code

To diagnose the P1717 code, you will need a diagnostic scanner that can read transmission codes. Here are the steps to follow:

Connect the diagnostic scanner

Connect the diagnostic scanner to the car’s diagnostic port, usually located under the dashboard on the driver’s side. This will help you examine the code and all related codes with brief explanations and possibly indicate a faulty component that has caused the code.

Check the fluid level

Check the transmission fluid levels to ensure that they are within the manufacturer’s recommended range. If there’s not enough transmission fluid, your transmission may skip between gears since hydraulic pressure is needed for proper shifts.

Inspect the ISS sensor

Use a multimeter to test the ISS’s resistance. The resistance should fall within the manufacturer’s recommended range. If it doesn’t, the sensor is faulty and will need to be replaced.

How to fix the P1717 code

The method of fixing the P1717 code widely depends on the reason behind it, so that’s why the previous step is so crucial. Once you’ve understood what caused the code in the first place, it’s much easier to act and repair the issue with one of the following solutions:

Check and repair the wiring

The first step in fixing the P1717 code is to check the wiring and connectors in the input/turbine speed sensor circuit. Look for any signs of damage or corrosion, and ensure that all connections are secure. If any problems are found, repair or replace the affected components as necessary.

Replace the sensor

If the wiring and connectors are all in good condition, the next step is to check the input/turbine speed sensor itself. This can be done using a multimeter to test for resistance or voltage. If the sensor is found to be faulty, it will need to be replaced with a new one.

Repair transmission damage

If neither the wiring nor the sensor is found to be the problem, it’s possible that there is an issue with the transmission itself. This could include problems with the torque converter or other internal components. In this case, it may be necessary to repair or replace the transmission to fix the P1717 code.

How to prevent the P1717 code

Preventing the P1717 code requires proper maintenance of the transmission system. Here are some tips that you can apply to mitigate the risks of getting the code P1717 glowing up on the scanner tool again:

• Regularly check the transmission fluid levels and change the fluid as recommended by the manufacturer
• Inspect the wiring that connects the ISS to the car’s computer regularly
• Drive the car gently and avoid harsh shifting and sudden accelerations

By taking these steps, you can finally get rid of the code P1717 for good and prevent it from occurring in your car again.

Our take

The P1717 code is a critical diagnostic code that can indicate several issues with a car’s transmission system. It’s essential to diagnose and fix the problem as soon as possible to avoid more severe issues. By following the steps outlined in this article, you can diagnose, repair, and prevent the P1717 code from appearing on your car.