Engine-CodesLexus – P0715 Lexus

P0715 Lexus Code - Input / Turbine Speed Sensor Circuit Malfunction

Quick Answer

The P0715 diagnostic trouble code (DTC) for Lexus vehicles indicates a malfunction in the input/turbine speed sensor circuit. Common causes include Faulty input/turbine speed sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning TCM. 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 Lexus indicates Input / Turbine Speed Sensor Circuit Malfunction.
Common causes
Common causes include Faulty input/turbine speed sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning TCM.
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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0715 Lexus Description

The P0715 diagnostic trouble code (DTC) for Lexus vehicles indicates a malfunction in the input/turbine speed sensor circuit. This sensor plays a crucial role in the transmission system by monitoring the speed of the input shaft and turbine shaft inside the transmission. The information provided by the sensor is used by the vehicle's transmission control module (TCM) to determine the appropriate gear shifts and ensure smooth operation of the transmission.

OBDII Code P0715 Lexus - Input / Turbine Speed Sensor Circuit Malfunction
P0715 Lexus Code - Input / Turbine Speed Sensor Circuit Malfunction

Common Causes of P0715 Lexus

  1. Faulty input/turbine speed sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Malfunctioning TCM
  4. Faulty transmission control module
  5. Issues with transmission fluid level or quality

Symptoms of P0715 Lexus

  1. Erratic shifting behavior
  2. Harsh or delayed gear changes
  3. Transmission slipping
  4. Decreased fuel efficiency
  5. Illumination of the check engine light

How to Fix P0715 Lexus

  1. Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the specific trouble code and confirm the issue.
  2. Inspect the input/turbine speed sensor and its circuit for any visible damage or corrosion. Replace the sensor if necessary.
  3. Check the wiring and connectors in the sensor circuit for any faults or loose connections. Repair or replace as needed.
  4. Test the TCM and transmission control module for proper functionality. Replace if found to be faulty.
  5. Clear the trouble code from the vehicle's computer memory and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0715 Lexus

The cost of repairing a P0715 code on a Lexus vehicle can vary depending on the specific cause of the issue and the labor rates in your area. In general, the cost of replacing the input/turbine speed sensor can range from $100 to $300, including parts and labor. However, additional costs may apply if other components need to be replaced or if extensive diagnostic work is required. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on your vehicle's make and model.

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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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