The P0779 OBD-II code is an indication that there is an issue with the Pressure Control Solenoid “B” in your vehicle’s transmission system. This code is associated with the Transmission Control Module (TCM), which plays a crucial role in regulating the hydraulic pressure necessary for shifting gears.
What Does the P0779 Code Mean?
This code signifies that the TCM has detected an intermittent malfunction with the Pressure Control Solenoid “B”. This solenoid is vital for managing the hydraulic pressure within the transmission, which directly affects the vehicle’s ability to shift gears smoothly.
What Causes the P0779 Code?
Several factors can lead to the P0779 code, including:
- Failure of the Transmission Control Module (TCM)
- Low transmission fluid levels
- Defective pressure control solenoid
- Wiring issues related to the transmission system
What Are the Symptoms of the P0779 Code?
The symptoms associated with the P0779 code may include:
- Transmission may not shift properly
- Increased fuel consumption
How Serious Is the P0779 Code?
The P0779 code is classified as urgent and indicates that immediate action is necessary. Ignoring this code can lead to significant damage to the vehicle’s transmission system, potentially leading to costly repairs and unsafe driving conditions.
How to Diagnose the P0779 Code
To properly diagnose the P0779 code, a mechanic will typically perform the following steps:
- Use an OBD-II scanner to confirm the presence of the P0779 code.
- Inspect the transmission fluid level and quality.
- Examine the wiring and connectors related to the pressure control solenoid.
- Test the functionality of the Pressure Control Solenoid and the TCM.
Common Repairs for the P0779 Code
Common repairs for the P0779 code may include:
- Replacing the Pressure Control Solenoid
- Repairing or replacing damaged wiring or connectors
- Refilling or flushing the transmission fluid
- Replacing the Transmission Control Module if deemed faulty
How Much Does It Cost to Fix the P0779 Code?
The cost to fix the P0779 code can vary widely based on the specific issue identified during diagnosis. Typical repair costs can range from $100 to $1,500, depending on whether it involves simple repairs like fluid replacement or more complex repairs like replacing the TCM.
Can I Fix the P0779 Code Myself?
While some vehicle owners may choose to tackle minor issues such as checking fluid levels or inspecting wires themselves, it is generally advisable to consult a professional mechanic for diagnosing and repairing the P0779 code. Proper diagnosis is essential to avoid unnecessary repairs and ensure the safety and functionality of your vehicle.
