AutoCodes – Toyota – P0793 Toyota

P0793 Toyota Code - Intermediate Shaft Speed Sensor 'A'

Quick Answer

This sensor detects the rotation speed of the counter gear which indicates the output speed of the transaxle. Common causes include Faulty Speed sensor NC (Transmission Revolution Sensor), Speed sensor NC harness is open or shorted, Speed sensor NC 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: P0793 Toyota indicates Intermediate Shaft Speed Sensor 'A'.
Common causes: Common causes include Faulty Speed sensor NC (Transmission Revolution Sensor), Speed sensor NC harness is open or shorted, Speed sensor NC 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 69,532

How popular is this code, among other codes? Medium

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 12, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0793 Toyota Description

This sensor detects the rotation speed of the counter gear which indicates the output speed of the transaxle. By comparing the input turbine speed (speed sensor NT) signal with the counter gear speed (speed sensor NC) signal, 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. As a result, the gears shift smoothly.
The NT terminal of the ECM detects a pulse signal from the speed sensor NT (input RPM). The ECM calculates gear shifts by comparing the signal from speed sensor NT with the signal from speed sensor NC.
While the vehicle is operating in 2nd, 3rd, 4th, or 5th gear with the shift lever in D, if the input shaft speed is less than 300 rpm although the output shaft speed is more than 1000 rpm, the ECM interprets this as a fault, illuminates the MIL and stores the Diagnostic Trouble Code (DTC). P0793 code is detected when the vehicle speed is 25 km/h (15.54 mph) or more, the counter gear speed is less than 300 rpm for 2 sec. or more.

OBDII Code P0793 Toyota - Intermediate Shaft Speed Sensor 'A' - AutoCodes.com — P0793 Toyota Code - Intermediate Shaft Speed Sensor 'A'

What does this mean?

What are the Possible Causes of the DTC P0793 Toyota?

Faulty Speed sensor NC (Transmission Revolution Sensor)
Speed sensor NC harness is open or shorted
Speed sensor NC circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0793 Toyota?

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 P0793 Toyota 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 P0793 Toyota code?

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Information for Specific Toyota Models

P0793 2006 Toyota Camry — Intermediate Shaft Speed Sensor 'A' Circuit No Signal
P0793 2007 Toyota Camry — Intermediate Shaft Speed Sensor 'A' Circuit No Signal
P0793 2008 Toyota Camry — Intermediate Shaft Speed Sensor 'A' Circuit No Signal
P0793 2009 Toyota Camry — Intermediate Shaft Speed Sensor 'A' Circuit No Signal
P0793 2010 Toyota Camry — Intermediate Shaft Speed Sensor 'A' Circuit No Signal
P0793 2011 Toyota Camry — Intermediate Shaft Speed Sensor 'A' Circuit No Signal
P0793 2013 Toyota RAV4 — Intermediate Shaft Speed Sensor 'A'
P0793 2014 Toyota RAV4 — Intermediate Shaft Speed Sensor 'A'
P0793 2015 Toyota RAV4 — Intermediate Shaft Speed Sensor 'A'
P0793 2016 Toyota RAV4 — Intermediate Shaft Speed Sensor 'A'
P0793 2017 Toyota RAV4 — Intermediate Shaft Speed Sensor 'A'
P0793 2018 Toyota RAV4 — Intermediate Shaft Speed Sensor 'A'

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 P0793 Toyota Code

1. What are common symptoms of OBDII code P0793 in a Toyota related to the Intermediate Shaft Speed Sensor 'A'?

- Common symptoms include erratic shifting, harsh shifting, transmission slipping, and illuminated warning lights on the dashboard.

2. What are the potential causes of OBDII code P0793 in a Toyota?

- The code P0793 is typically triggered by a faulty Intermediate Shaft Speed Sensor, wiring issues, low transmission fluid levels, or internal transmission problems.

3. How can I diagnose the cause of OBDII code P0793 in my Toyota?

- Diagnosing the issue involves performing a scan with an OBDII scanner, checking the transmission fluid level and condition, inspecting the sensor and its wiring for damage, and conducting a road test to observe transmission behavior.

4. Is it safe to continue driving my Toyota with OBDII code P0793 present?

- It is not recommended to drive the vehicle with code P0793 as it can lead to further transmission damage and potentially unsafe driving conditions. It is best to address the issue promptly.

5. Can I repair OBDII code P0793 in my Toyota by replacing the Intermediate Shaft Speed Sensor 'A' myself?

- While replacing the sensor can be done as a DIY repair, it is recommended to have a professional mechanic perform the task to ensure proper installation and avoid further complications.

6. Are there any tips for preventing OBDII code P0793 from occurring in my Toyota?

- Regular maintenance, including checking and changing transmission fluid at recommended intervals, can help prevent issues that may trigger code P0793. Promptly addressing any shifting irregularities can also help avoid this problem.

7. How much does it typically cost to repair OBDII code P0793 in a Toyota?

- The cost of repairing code P0793 can vary depending on the root cause of the issue, the labor rates in your area, and whether any additional transmission repairs are needed. It is recommended to get a diagnostic and repair estimate from a trusted mechanic.

8. Is OBDII code P0793 a common issue in Toyota vehicles?

- While not as common as some other OBDII codes, P0793 related to the Intermediate Shaft Speed Sensor 'A' may occur in Toyota vehicles, particularly in models with high mileage or inadequate maintenance.

9. Can resetting the OBDII code P0793 in my Toyota make the issue go away temporarily?

- Resetting the code may temporarily turn off the warning light, but it will not fix the underlying problem causing code P0793. It is essential to address the root cause of the issue to prevent further transmission damage.

10. How long does it typically take to repair OBDII code P0793 in a Toyota?

- The repair time for code P0793 can vary depending on the exact cause of the issue and the extent of repairs needed. In some cases, it may be resolved within a few hours, while more complex repairs could take longer.