AutoCodes – Saturn – P0777 Saturn

P0777 Saturn Code - Clutch Pressure Control Solenoid 2 Stuck On

Quick Answer

The clutch pressure control (PC) solenoid 2 is part of the control solenoid (w/body and TCM) valve assembly and is not serviced separately. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Clutch Pressure Control Solenoid 2. 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 Saturn indicates Clutch Pressure Control Solenoid 2 Stuck On.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Clutch Pressure Control Solenoid 2.
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.

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Code Popularity 5,488

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 26, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
Comments
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Code P0777 Saturn Description

The clutch pressure control (PC) solenoid 2 is part of the control solenoid (w/body and TCM) valve assembly and is not serviced separately. The clutch PC solenoid 2 flows fluid to the 3-5-R clutch when commanded OFF and exhausts fluid when commanded ON. The clutch PC solenoid 2 regulates the transmission fluid pressure to the 3-5-R clutch. The Transmission Control Module (TCM) calculates gear ratio based on data from the automatic transmission input speed sensor (ISS) and the output speed sensor (OSS). The TCM compares the known transmission gear ratio to a calculated gear ratio for each commanded gear.

OBDII Code P0777 Saturn - Clutch Pressure Control Solenoid 2 Stuck On - AutoCodes.com — P0777 Saturn Code - Clutch Pressure Control Solenoid 2 Stuck On

What does this mean?

What are the Possible Causes of the DTC P0777 Saturn?

Low transmission fluid level
Dirty transmission fluid
Faulty Clutch Pressure Control Solenoid 2
Clutch Pressure Control Solenoid 2 harness is open or shorted
Clutch Pressure Control Solenoid 2 circuit poor electrical connection

How to Fix the DTC P0777 Saturn?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

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 Saturn Models:
2007-2009 Saturn AURA
2007-2009 Saturn OUTLOOK
2008-2009 Saturn VUE
Saturn Factory Service Bulletin OBDII Code P0777

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0777 Saturn code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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.