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P0791 Toyota Code - Intermediate Shaft Speed Sensor 'A' Circuit

Quick Answer

The P0791 code for Toyota vehicles indicates a problem with the Intermediate Shaft Speed Sensor 'A' Circuit. Common causes include Faulty intermediate shaft speed sensor, Damaged wiring or connectors in the sensor circuit, Issues with the transmission control module. 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
P0791 Toyota indicates Intermediate Shaft Speed Sensor 'A' Circuit.
Common causes
Common causes include Faulty intermediate shaft speed sensor, Damaged wiring or connectors in the sensor circuit, Issues with the transmission control module.
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 10, 2024
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Code P0791 Toyota Description

The P0791 code for Toyota vehicles indicates a problem with the Intermediate Shaft Speed Sensor 'A' Circuit. This sensor is responsible for monitoring the speed of the intermediate shaft in the transmission. The information gathered by the sensor is used by the vehicle's transmission control module to determine shift points and ensure smooth gear changes while driving.

OBDII Code P0791 Toyota - Intermediate Shaft Speed Sensor 'A' Circuit
P0791 Toyota Code - Intermediate Shaft Speed Sensor 'A' Circuit

Common Causes of P0791 Toyota

  1. Faulty intermediate shaft speed sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Issues with the transmission control module
  4. Electrical problems such as a short circuit or open circuit in the sensor circuit
  5. Wear and tear on the sensor due to age or mileage

Symptoms of P0791 Toyota

  1. Harsh or delayed shifting
  2. Erratic behavior while changing gears
  3. Inability to shift gears
  4. Reduced fuel efficiency
  5. Illumination of the Check Engine Light

How to Fix P0791 Toyota

  1. Perform a diagnostic scan to confirm the P0791 code and pinpoint the exact cause of the issue.
  2. Inspect the intermediate shaft speed sensor and its wiring for any visible damage or wear.
  3. Replace the faulty sensor if it is determined to be the cause of the problem.
  4. Repair or replace any damaged wiring or connectors in the sensor circuit.
  5. Clear the trouble code from the vehicle's computer and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0791 Toyota

The typical repair costs for addressing a P0791 code on a Toyota vehicle can range from $200 to $500, including parts and labor. However, it's important to note that the specific diagnosis time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. It's recommended to check with local auto repair shops for a more accurate estimate based on your specific circumstances.

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Information for Specific Toyota Models

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.

Frequently Asked Questions about P0791 Toyota Code

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  • DTC P0791 for toyota camry, is the same DTC code for 2010 6.4 Diesel . Intermediate Shaft Speed Sensor A Circuit. Thanks for the help I found the location of the sensor on my pickups transmission.

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