AutoCodes – Generic – P2791

P2791 Code - Gate Select Direction Circuit Low

Quick Answer

The Transmission Control Module (TCM) monitors the Gate Select Direction Circuit signal. Common causes include Defective Range Sensor, Faulty Transmission Shifter, Transmission Shifter harness is open or shorted. 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: P2791 indicates Gate Select Direction Circuit Low.
Common causes: Common causes include Defective Range Sensor, Faulty Transmission Shifter, Transmission Shifter harness is open or shorted.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 6,436

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 Feb 15, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P2791 Description

The Transmission Control Module (TCM) monitors the Gate Select Direction Circuit signal. The TCM sets the OBDII code when the Gate Select Direction Circuit signal is out of factory specifications.

OBDII Code P2791 - Gate Select Direction Circuit Low - AutoCodes.com — P2791 Code - Gate Select Direction Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2791?

Defective Range Sensor
Faulty Transmission Shifter
Transmission Shifter harness is open or shorted
Transmission Shifter circuit poor electrical connection

How to Fix the DTC P2791?

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 P2791 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 P2791 code?

Need more information on how to fix the P2791 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2791 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P2791 Dodge — Gate Select Direction Circuit Low

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.