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Engine-Codes – Generic – P0976

P0976 Code - Shift Solenoid 'B' Control Circuit Low

Quick Answer

The P0976 diagnostic trouble code (DTC) refers to an issue with the Shift Solenoid 'B' Control Circuit being detected as low. Common causes include Faulty shift solenoid 'B', Damaged wiring or connectors in the control circuit, Malfunctioning transmission control module (TCM). 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
P0976 indicates Shift Solenoid 'B' Control Circuit Low.
Common causes
Common causes include Faulty shift solenoid 'B', Damaged wiring or connectors in the control circuit, Malfunctioning transmission control module (TCM).
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code P0976 Description

The P0976 diagnostic trouble code (DTC) refers to an issue with the Shift Solenoid 'B' Control Circuit being detected as low. In an automatic transmission system, shift solenoids are responsible for controlling the flow of transmission fluid to engage or disengage gears. Solenoid 'B' specifically plays a crucial role in shifting between certain gears. When the control circuit for this solenoid is detected as low, it means that the voltage signal sent to the solenoid is below the expected range, causing improper operation.

OBDII Code P0976 - Shift Solenoid 'B' Control Circuit Low
P0976 Code - Shift Solenoid 'B' Control Circuit Low

Common Causes of P0976

  1. Faulty shift solenoid 'B'
  2. Damaged wiring or connectors in the control circuit
  3. Malfunctioning transmission control module (TCM)
  4. Low transmission fluid levels
  5. Electrical issues such as a blown fuse or short circuit

Symptoms of P0976

  1. Erratic or harsh shifting between gears
  2. Slipping gears or difficulty engaging gears
  3. Transmission getting stuck in a specific gear
  4. Reduced fuel efficiency
  5. Illumination of the Check Engine Light

How to Fix P0976

  1. Begin by conducting a thorough diagnostic scan to confirm the P0976 code and identify the specific cause of the issue.
  2. Inspect the wiring and connectors in the shift solenoid 'B' control circuit for any damage or corrosion. Repair or replace as necessary.
  3. Test the shift solenoid 'B' for proper operation. If found faulty, replace the solenoid with a new one.
  4. Check the transmission fluid level and condition. Top up or replace the fluid if low or contaminated.
  5. Clear the DTC and perform a test drive to ensure the transmission shifts smoothly and the code does not reappear.

Cost to Fix P0976

The typical repair costs for addressing a Shift Solenoid 'B' Control Circuit Low issue can vary depending on the specific cause and the extent of repairs needed. On average, the cost of replacing a shift solenoid 'B' can range from $150 to $300, including parts and labor. However, if additional components such as wiring or the TCM need to be replaced, the total repair cost could be higher. It's advisable to consult with a professional mechanic or auto repair shop to get an accurate estimate based on your vehicle's make and model, as well as local labor rates. Keep in mind that diagnostic time and labor rates can vary, so it's essential to inquire about these factors before proceeding with the repairs.

What does this mean?

Tech Notes for P0976

















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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.

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