Engine-CodesPontiac – P0777 Pontiac

P0777 Pontiac Code - Clutch Pressure Control Solenoid 2 Stuck On

Quick Answer

The diagnostic trouble code P0777 for Pontiac vehicles specifically refers to the Clutch Pressure Control Solenoid 2 being stuck on. Common causes include Faulty Clutch Pressure Control Solenoid 2, Wiring or connector issues related to the solenoid, Low transmission fluid levels. 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
P0777 Pontiac indicates Clutch Pressure Control Solenoid 2 Stuck On.
Common causes
Common causes include Faulty Clutch Pressure Control Solenoid 2, Wiring or connector issues related to the solenoid, Low transmission fluid levels.
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 11, 2024
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Code P0777 Pontiac Description

The diagnostic trouble code P0777 for Pontiac vehicles specifically refers to the Clutch Pressure Control Solenoid 2 being stuck on. This solenoid is a critical component of the transmission system, responsible for regulating the hydraulic pressure within the transmission clutch. When this solenoid becomes stuck in the on position, it can lead to various issues with the vehicle's transmission system, affecting its performance and drivability.

OBDII Code P0777 Pontiac - Clutch Pressure Control Solenoid 2 Stuck On
P0777 Pontiac Code - Clutch Pressure Control Solenoid 2 Stuck On

Common Causes of P0777 Pontiac

  1. Faulty Clutch Pressure Control Solenoid 2
  2. Wiring or connector issues related to the solenoid
  3. Low transmission fluid levels
  4. Contaminated transmission fluid
  5. Internal transmission damage

Symptoms of P0777 Pontiac

  1. Harsh shifting between gears
  2. Difficulty engaging gears
  3. Erratic shifting patterns
  4. Transmission slipping
  5. Transmission failure

How to Fix P0777 Pontiac

  1. Start by diagnosing the issue using a diagnostic scanner to confirm the P0777 trouble code.
  2. Inspect the Clutch Pressure Control Solenoid 2 for any signs of damage or sticking.
  3. Check the wiring and connectors for any loose connections or damage.
  4. Replace the Clutch Pressure Control Solenoid 2 if it is found to be faulty.
  5. Refill the transmission fluid to the proper level and quality, ensuring it is free from contamination.

Cost to Fix P0777 Pontiac

The cost of repairing a P0777 trouble code can vary depending on the specific issue and the labor rates of the auto repair shop. Typically, replacing the Clutch Pressure Control Solenoid 2 can range from $150 to $300, including parts and labor. Additional costs may be incurred if there are other underlying issues with the transmission system. It is advisable to consult with a trusted mechanic or dealership for a more accurate cost estimate based on your Pontiac model and location.

Tech Notes for P0777 Pontiac

When a transmission solenoid is malfunctioned, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is dirty, it's recommended to change the transmission fluid and if possible removing the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a mechanical transmission failure and that the transmission will need to be rebuilt or replaced.



There is a factory service bulletin for the following Pontiac Models:

2007-2009 Pontiac G6

2008-2009 Pontiac Torrent

Pontiac Factory Service Bulletin OBDII Code P0777

Need more information about the P0777 Pontiac code?

Need more information on how to fix the P0777 Pontiac code? Get Access to Factory Service Manuals

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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 P0777 Pontiac Code

What does OBDII code P0777 mean for a Pontiac?

Code P0777 indicates the Clutch Pressure Control Solenoid 2 is stuck on, which can affect the transmission's ability to shift properly.

What are the common symptoms of P0777 in a Pontiac?

Symptoms include harsh or delayed shifting, transmission slipping, poor acceleration, and possibly the check engine light turning on.

What causes the P0777 code in a Pontiac?

Common causes include a faulty pressure control solenoid, transmission fluid issues (low or dirty), wiring problems, or internal transmission damage.

Can driving with the P0777 code damage my Pontiac?

Yes, driving with this code can lead to further transmission damage and unsafe driving conditions if the issue isn't addressed promptly.

How can I diagnose the P0777 code on a Pontiac?

Start by checking the transmission fluid level and condition, inspecting wiring and connectors for damage, and testing the pressure control solenoid for proper operation.

How do I fix the P0777 code on a Pontiac?

Repairs may involve replacing the pressure control solenoid, cleaning or flushing the transmission fluid, repairing damaged wiring, or addressing internal transmission issues.

What maintenance can prevent the P0777 code?

Regular transmission fluid changes and inspections of the transmission system can help prevent solenoid-related issues and extend the life of the transmission.

Can a faulty pressure control solenoid cause other codes besides P0777?

Yes, a faulty solenoid can trigger other transmission-related codes, such as P0776 or P0778, depending on the nature of the issue.

How much does it cost to fix the P0777 code on a Pontiac?

Repair costs can vary greatly, ranging from $150-$500 for solenoid replacement to over $1,000 for internal transmission repairs, depending on the severity of the issue.

Should I take my Pontiac to a mechanic for the P0777 code?

If the issue isn't resolved by simple maintenance like replacing the transmission fluid, it’s best to consult a certified mechanic for further diagnosis and repair.

Discuss the causes and fixes for P0777 Pontiac OBDII Code

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