AutoCodesToyota – P0791 2009 Toyota Camry

P0791 2009 Toyota Camry Code - Intermediate Shaft Speed Sensor 'A' Circuit

Quick Answer

This sensor detects the rotation speed of the input turbine. Common causes include Faulty Intermediate Shat Speed Sensor 'A', Intermediate Shat Speed Sensor 'A' harness is open or shorted, Intermediate Shat Speed Sensor 'A' circuit poor electrical connection. 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 2009 Toyota Camry indicates Intermediate Shaft Speed Sensor 'A' Circuit.
Common causes
Common causes include Faulty Intermediate Shat Speed Sensor 'A', Intermediate Shat Speed Sensor 'A' harness is open or shorted, Intermediate Shat Speed Sensor 'A' circuit poor electrical connection.
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.
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Code Popularity 5,788
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 08, 2019
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Code P0791 2009 Toyota Camry Description

This sensor detects the rotation speed of the input turbine. By comparing the input turbine speed signal (NT) with the counter gear speed sensor signal (NC), the Engine Control Module (ECM) detects the shift timing of the gears and appropriately controls the engine torque and hydraulic pressure according to various conditions. Thus, providing smooth gear shift.
OBDII Code P0791 2009 Toyota Camry - Intermediate Shaft Speed Sensor 'A' Circuit - AutoCodes.com
P0791 2009 Toyota Camry Code - Intermediate Shaft Speed Sensor 'A' Circuit

What are the Possible Causes of the DTC P0791 2009 Toyota Camry?

  • Faulty Intermediate Shat Speed Sensor 'A'
  • Intermediate Shat Speed Sensor 'A' harness is open or shorted
  • Intermediate Shat Speed Sensor 'A' circuit poor electrical connection

How to Fix the DTC P0791 2009 Toyota Camry?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0791 2009 Toyota Camry code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0791 2009 Toyota Camry code?

Need more information on how to fix the P0791 2009 Toyota Camry code? Get Access to Factory Service Manuals

Need Help with the Code?

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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.

Frequently Asked Questions about P0791 2009 Toyota Camry Code

1. What does the OBDII code P0791 mean on a 2009 Toyota Camry?

P0791 indicates an issue with the Intermediate Shaft Speed Sensor 'A' Circuit, which monitors the rotational speed of the transmission's intermediate shaft.

2. What are the common symptoms of a P0791 code in a 2009 Toyota Camry?

Symptoms may include erratic or delayed shifting, poor acceleration, reduced fuel efficiency, or the check engine light turning on.

3. What causes the P0791 code to appear?

Possible causes include a faulty intermediate shaft speed sensor, damaged wiring or connectors, a failed transmission control module (TCM), or mechanical issues within the transmission.

4. Can I drive my 2009 Toyota Camry with a P0791 code?

It’s not recommended to drive the vehicle for long distances with this code, as it can lead to further transmission damage or unsafe driving conditions due to shifting issues.

5. How do I diagnose the P0791 code on a 2009 Toyota Camry?

Diagnosis involves using an OBDII scanner to confirm the code, visually inspecting the sensor and wiring for damage, and testing the sensor's resistance and voltage with a multimeter.

6. How do I fix the P0791 code in my 2009 Toyota Camry?

Potential fixes include replacing the intermediate shaft speed sensor, repairing or replacing damaged wiring or connectors, reprogramming the TCM, or addressing internal transmission issues.

7. Where is the intermediate shaft speed sensor located on a 2009 Toyota Camry?

The sensor is typically located on the transmission housing, near the intermediate shaft, but refer to the service manual for the exact location.

8. How much does it cost to fix a P0791 code on a 2009 Toyota Camry?

Repair costs can range from $100 to $300 for sensor replacement and up to $1,000 or more if there are internal transmission issues.

9. Can a P0791 code be triggered by low transmission fluid?

Yes, low or contaminated transmission fluid can affect sensor performance and trigger the P0791 code.

10. Does clearing the P0791 code fix the issue?

Clearing the code without addressing the underlying problem will only temporarily turn off the check engine light, and the code is likely to return.

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