AutoCodes – Dodge – P0791 Dodge

P0791 Dodge Code - Transfer Speed Sensor Circuit

Quick Answer

This sensor detects the rotation speed of the input turbine. Common causes include Faulty Transfer speed sensor, Transfer speed sensor harness is open or shorted, Transfer speed sensor 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 Dodge indicates Transfer Speed Sensor Circuit.
Common causes: Common causes include Faulty Transfer speed sensor, Transfer speed sensor harness is open or shorted, Transfer speed sensor 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 8,157

How popular is this code, among other codes? Low

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 May 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0791 Dodge 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 Dodge - Transfer Speed Sensor Circuit - AutoCodes.com — P0791 Dodge Code - Transfer Speed Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC P0791 Dodge?

Faulty Transfer speed sensor
Transfer speed sensor harness is open or shorted
Transfer speed sensor circuit poor electrical connection

How to Fix the DTC P0791 Dodge?

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 Dodge 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.

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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 Dodge Code

1. What are the common symptoms of OBDII code P0791 in a Dodge related to the Transfer Speed Sensor Circuit?

- Common symptoms include issues with shifting, erratic speedometer readings, and the illumination of the Check Engine Light.

2. What typically causes the OBDII code P0791 in a Dodge related to the Transfer Speed Sensor Circuit?

- The code is usually triggered by a faulty transfer speed sensor, damaged wiring or connectors, or issues with the transmission control module.

3. How can I diagnose the OBDII code P0791 in my Dodge related to the Transfer Speed Sensor Circuit?

- Diagnosis involves using a scan tool to read the code, inspecting the transfer speed sensor and related wiring, and testing the sensor's resistance and output signal.

4. Can I continue driving my Dodge with OBDII code P0791 related to the Transfer Speed Sensor Circuit?

- It is not recommended to drive the vehicle with this code present, as it can lead to further transmission issues and potential safety hazards.

5. What are some repair tips for fixing OBDII code P0791 in a Dodge related to the Transfer Speed Sensor Circuit?

- Repair tips include replacing the transfer speed sensor, repairing any damaged wiring or connectors, and resetting the fault code to see if it reoccurs.

6. Is it possible to reset the OBDII code P0791 related to the Transfer Speed Sensor Circuit without making any repairs?

- While clearing the code may temporarily turn off the Check Engine Light, it is essential to address the underlying issue causing the code to prevent further problems.

7. How much does it typically cost to repair OBDII code P0791 related to the Transfer Speed Sensor Circuit in a Dodge?

- The cost can vary depending on the specific cause of the code, but it may involve parts and labor expenses ranging from $100 to $400 or more.

8. Can a DIY enthusiast with automotive skills fix OBDII code P0791 related to the Transfer Speed Sensor Circuit in a Dodge?

- Depending on the individual's expertise, replacing the transfer speed sensor or repairing wiring connections may be manageable for a DIY enthusiast with the necessary tools and knowledge.

9. Will OBDII code P0791 in a Dodge related to the Transfer Speed Sensor Circuit affect fuel efficiency?

- While the code itself may not directly impact fuel efficiency, unresolved transmission issues can lead to poor performance and potentially affect fuel economy over time.

10. How urgent is it to address OBDII code P0791 related to the Transfer Speed Sensor Circuit in a Dodge?

- It is recommended to address the code promptly to prevent further damage to the transmission system and ensure the vehicle operates safely and efficiently.