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P0979 Acura Code - Shift Solenoid Valve 'C' Short

Quick Answer

The P0979 diagnostic trouble code for Acura vehicles indicates a problem with the Shift Solenoid Valve 'C', specifically a short circuit. Common causes include Electrical wiring issues, Damaged solenoid components, Corrosion in the transmission system. 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
P0979 Acura indicates Shift Solenoid Valve 'C' Short.
Common causes
Common causes include Electrical wiring issues, Damaged solenoid components, Corrosion in the transmission system.
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 11, 2024
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Code P0979 Acura Description

The P0979 diagnostic trouble code for Acura vehicles indicates a problem with the Shift Solenoid Valve 'C', specifically a short circuit. The shift solenoid valve 'C' is an essential component of the transmission system responsible for controlling the flow of transmission fluid to engage the appropriate gears for smooth operation of the vehicle. When this solenoid malfunctions due to a short circuit, it can lead to transmission issues, affecting the vehicle's performance and drivability.

OBDII Code P0979 Acura - Shift Solenoid Valve 'C' Short
P0979 Acura Code - Shift Solenoid Valve 'C' Short

Common Causes of P0979 Acura

  1. Electrical wiring issues
  2. Damaged solenoid components
  3. Corrosion in the transmission system
  4. Faulty transmission control module
  5. Poor maintenance or wear and tear

Symptoms of P0979 Acura

  1. Erratic shifting behavior
  2. Harsh gear changes
  3. Delayed or no gear engagement
  4. Transmission slippage
  5. Illumination of the Check Engine Light

How to Fix P0979 Acura

  1. Diagnose the underlying cause of the short circuit in the Shift Solenoid Valve 'C' using a diagnostic scanner and multimeter.
  2. Inspect the electrical wiring and connections for any signs of damage or corrosion.
  3. Test the solenoid components for proper functionality and replace if necessary.
  4. Check the transmission control module for faults and reprogram or replace as needed.
  5. Clear the fault codes, reset the system, and test drive the vehicle to ensure the issue is resolved.

Cost to Fix P0979 Acura

The typical repair costs for addressing a Shift Solenoid Valve 'C' short circuit issue in an Acura vehicle can range from $200 to $500, including parts and labor. It's important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's advisable to obtain quotes from multiple sources to get a more accurate estimate for this repair.

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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 P0979 Acura Code

1. What does the OBDII code P0979 mean for an Acura?

P0979 indicates a problem with the Shift Solenoid Valve 'C', specifically a short circuit in its electrical system.

2. What are the common symptoms of code P0979?

Symptoms may include erratic or delayed shifting, transmission slipping, poor fuel efficiency, and the Check Engine Light illuminating.

3. What causes the P0979 code on an Acura?

Common causes include damaged wiring or connectors, a faulty shift solenoid valve 'C', transmission fluid contamination, or issues with the transmission control module (TCM).

4. Can driving with code P0979 damage my Acura's transmission?

Yes, prolonged driving with this code can lead to further transmission issues or damage due to improper shifting.

5. How do I diagnose the P0979 code on my Acura?

Start by inspecting the wiring and connectors for damage, checking the transmission fluid condition, and testing the functionality of the shift solenoid valve 'C'.

6. How do I fix code P0979 on an Acura?

Repairs may include replacing the shift solenoid valve 'C', repairing damaged wiring, cleaning or replacing contaminated transmission fluid, or addressing TCM issues.

7. How much does it cost to fix the P0979 code on an Acura?

Depending on the diagnosis, repairs can range from $150 to $500 or more, especially if the solenoid or TCM needs replacement.

8. Can low transmission fluid cause the P0979 code on an Acura?

Yes, low or contaminated transmission fluid can affect solenoid performance and trigger this code.

9. Do I need to reprogram the transmission control module after fixing code P0979?

In some cases, reprogramming the TCM may be necessary if its settings were affected by the fault.

10. Is P0979 a common issue in Acura vehicles?

While not overly common, issues with shift solenoids can occur in older or high-mileage Acura models and should be addressed promptly.

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