Engine-CodesGeneric – P0957

P0957 Code - Auto Shift Manual Mode Circuit Low

Quick Answer

The P0957 code indicates a problem with the Auto Shift Manual Mode Circuit being detected as low. Common causes include Faulty wiring or connectors in the Auto Shift Manual Mode Circuit, Malfunctioning shift solenoid, Defective 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
P0957 indicates Auto Shift Manual Mode Circuit Low.
Common causes
Common causes include Faulty wiring or connectors in the Auto Shift Manual Mode Circuit, Malfunctioning shift solenoid, Defective 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 10, 2024
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Code P0957 Description

The P0957 code indicates a problem with the Auto Shift Manual Mode Circuit being detected as low. This circuit is responsible for allowing the driver to manually shift gears in an automatic transmission vehicle. When this code is triggered, it means that the signal voltage in the circuit is lower than the specified threshold. This can affect the vehicle's performance by causing issues with shifting gears manually, leading to potential safety concerns.

OBDII Code P0957 - Auto Shift Manual Mode Circuit Low
P0957 Code - Auto Shift Manual Mode Circuit Low

Common Causes of P0957

  1. Faulty wiring or connectors in the Auto Shift Manual Mode Circuit
  2. Malfunctioning shift solenoid
  3. Defective transmission control module
  4. Problem with the manual shift mode switch
  5. Corrosion or damage to the circuit components

Symptoms of P0957

  1. Difficulty shifting gears manually
  2. Inability to shift gears in manual mode
  3. Illumination of the check engine light
  4. Reduced fuel efficiency
  5. Transmission slipping or jerking during shifting

How to Fix P0957

  1. Begin by inspecting the wiring and connectors in the Auto Shift Manual Mode Circuit for any signs of damage or corrosion. Repair or replace any damaged components.
  2. Check the shift solenoid and the transmission control module for proper operation. Replace any faulty components as needed.
  3. Test the manual shift mode switch to ensure it is functioning correctly. Replace the switch if necessary.
  4. Clear the diagnostic trouble codes from the vehicle's computer and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0957

The typical repair costs for addressing the P0957 code can vary depending on the specific cause of the issue. In general, the cost of parts for this repair can range from $100 to $500, while the labor costs can add an additional $100 to $300. Overall, the total repair cost could amount to anywhere from $200 to $800. It's important to note that these estimates are rough averages and actual costs may vary based on factors such as location, vehicle make and model, and the extent of the repairs needed. Be sure to consult with a professional mechanic for a more accurate cost estimate based on your specific situation.

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Code P0957 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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