Engine-CodesGeneric – P2791

P2791 Code - Gate Select Direction Circuit Low

Quick Answer

The diagnostic trouble code P2791 indicates an issue with the gate select direction circuit being detected as low. Common causes include Faulty gear selector switch, Wiring issues in the gate select direction circuit, Malfunctioning 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
P2791 indicates Gate Select Direction Circuit Low.
Common causes
Common causes include Faulty gear selector switch, Wiring issues in the gate select direction circuit, Malfunctioning 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.
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code P2791 Description

The diagnostic trouble code P2791 indicates an issue with the gate select direction circuit being detected as low. This code is typically found in vehicles with automatic transmission systems. The gate select direction circuit is responsible for determining the position of the gear selector in the vehicle. When this circuit is detected as low, it means that there is a problem with the signal being sent from the gear selector to the transmission control module.

OBDII Code P2791 - Gate Select Direction Circuit Low
P2791 Code - Gate Select Direction Circuit Low

Common Causes of P2791

  1. Faulty gear selector switch
  2. Wiring issues in the gate select direction circuit
  3. Malfunctioning transmission control module
  4. Loose or corroded electrical connections
  5. Software issues in the transmission control module

Symptoms of P2791

  1. Difficulty shifting gears
  2. Incorrect gear selection
  3. Stuck in a particular gear
  4. Transmission slipping
  5. Illumination of the check engine light

How to Fix P2791

  1. Begin by using a scan tool to diagnose the specific cause of the P2791 code.
  2. Inspect the gear selector switch and wiring for any visible damage or corrosion.
  3. Test the transmission control module to ensure it is functioning correctly.
  4. Repair or replace any damaged wiring or components in the gate select direction circuit.
  5. Clear the code from the vehicle's memory and test drive to ensure the issue has been resolved.

Cost to Fix P2791

The cost of repairing the P2791 code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the repair for this code can range from $200 to $500, including parts and labor. It is important to note that diagnostic time and labor rates at auto repair shops can vary, so it is recommended to obtain quotes from multiple shops to get a more accurate estimate.

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Code P2791 Information for Specific Makes

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.

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