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P0715 Saturn Code - Transmission Input/Turbine Speed Sensor Circuit Malfunction

Quick Answer

The P0715 diagnostic trouble code (DTC) for Saturn vehicles indicates a problem with the transmission input/turbine speed sensor circuit. Common causes include Faulty sensor: The input/turbine speed sensor may be defective or malfunctioning, providing inaccurate data to the TCM, Wiring issues: Damaged or corroded wiring connections can disrupt the signal between the sensor and the TCM, causing a circuit malfunction, Poor connection: Loose or poorly connected wiring terminals can lead to intermittent signal loss, triggering the code. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0715 Saturn indicates Transmission Input/Turbine Speed Sensor Circuit Malfunction.
Common causes
Common causes include Faulty sensor: The input/turbine speed sensor may be defective or malfunctioning, providing inaccurate data to the TCM, Wiring issues: Damaged or corroded wiring connections can disrupt the signal between the sensor and the TCM, causing a circuit malfunction, Poor connection: Loose or poorly connected wiring terminals can lead to intermittent signal loss, triggering the code.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0715 Saturn Description

The P0715 diagnostic trouble code (DTC) for Saturn vehicles indicates a problem with the transmission input/turbine speed sensor circuit. The transmission input speed sensor is responsible for monitoring the speed of the input shaft into the transmission, while the turbine speed sensor monitors the speed of the turbine inside the torque converter. These sensors provide critical data to the vehicle's transmission control module (TCM) to ensure smooth shifting and proper operation of the transmission.

OBDII Code P0715 Saturn - Transmission Input/Turbine Speed Sensor Circuit Malfunction
P0715 Saturn Code - Transmission Input/Turbine Speed Sensor Circuit Malfunction

Common Causes of P0715 Saturn

  1. Faulty sensor: The input/turbine speed sensor may be defective or malfunctioning, providing inaccurate data to the TCM.
  2. Wiring issues: Damaged or corroded wiring connections can disrupt the signal between the sensor and the TCM, causing a circuit malfunction.
  3. Poor connection: Loose or poorly connected wiring terminals can lead to intermittent signal loss, triggering the code.
  4. TCM fault: A problem with the transmission control module itself can also cause the P0715 code to appear, requiring further diagnostics and potential replacement.

Symptoms of P0715 Saturn

  1. Erratic shifting: The vehicle may experience abrupt or delayed shifts, making driving uncomfortable and potentially dangerous.
  2. Harsh engagements: The transmission may slam into gear when shifting, causing a jolt or jerking sensation.
  3. Transmission slippage: The transmission may slip out of gear or struggle to maintain power, leading to reduced performance and fuel efficiency.
  4. Illuminated check engine light: The P0715 code will trigger the check engine light on the dashboard, indicating a problem that needs attention.

How to Fix P0715 Saturn

  1. Diagnose the issue: Use a diagnostic scanner to retrieve the trouble code and conduct a thorough inspection of the sensor, wiring, and connections.
  2. Test the sensor: Check the input/turbine speed sensor for proper operation and resistance values to determine if it needs replacement.
  3. Inspect wiring: Examine the wiring harness for any signs of damage, corrosion, or loose connections, repairing or replacing as needed.
  4. Check TCM: Verify the functionality of the transmission control module by testing its inputs and outputs, replacing if necessary.
  5. Clear the code: Once the repair is complete, clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0715 Saturn

The typical repair costs for addressing a P0715 code on a Saturn vehicle can range from $200 to $500, including parts and labor. However, the actual cost may vary depending on the specific diagnosis, parts required, and labor rates at the auto repair shop. It's recommended to consult with a trusted mechanic or service center to receive an accurate estimate based on your vehicle's make and model.

When is the Code Detected?

Diagnostic Trouble Code (DTC) P0715 is detected when TCM or ECM does not receive the proper signal from the sensor.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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