AutoCodes – Chevrolet – P0797 Chevrolet

P0797 Chevrolet Code - Pressure Control Solenoid Valve 3 Stuck On

Quick Answer

The clutch pressure control solenoid 3 is part of the control solenoid valve assembly, which has no serviceable parts. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Control Solenoid Valve Assembly. 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: P0797 Chevrolet indicates Pressure Control Solenoid Valve 3 Stuck On.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Control Solenoid Valve Assembly.
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 15,281

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 Mar 25, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0797 Chevrolet Description

The clutch pressure control solenoid 3 is part of the control solenoid valve assembly, which has no serviceable parts. The Clutch Pressure Control Solenoid 3 regulates transmission fluid pressure to the CBR1/C 4-5-6 clutch regulator valve which controls pressure to the low/reverse clutch and the 4-5-6 clutch. The Transmission Control Module calculates gear ratio based on the RPM signals from the input speed sensor (ISS) and the output speed sensor (OSS). The Transmission Control Module compares the expected transmission gear ratio to the calculated gear ratio for each commanded gear. The Diagnostic Trouble Code (DTC) will be set when the Transmission Control Module has detected an incorrect gear ratio change when the low and reverse clutch and the 4-5-6 clutch is commanded OFF during a shift or when 4th gear ratio is detected in 1st gear. This condition must occur 3 times.

OBDII Code P0797 Chevrolet - Pressure Control Solenoid Valve 3 Stuck On - AutoCodes.com — P0797 Chevrolet Code - Pressure Control Solenoid Valve 3 Stuck On

What does this mean?

What are the Possible Causes of the DTC P0797 Chevrolet?

Low transmission fluid level
Dirty transmission fluid
Faulty Control Solenoid Valve Assembly
Control Solenoid Valve Assembly harness or connectors
Control Solenoid Valve Assembly circuit is open or shorted

How to Fix the DTC P0797 Chevrolet?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0797 Chevrolet 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.

Need more information about the P0797 Chevrolet code?

Need more information on how to fix the P0797 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0797 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P0797 2014 Chevrolet Silverado — Pressure Control Solenoid Valve 3 Stuck On
P0797 2015 Chevrolet Silverado — Pressure Control Solenoid Valve 3 Stuck On
P0797 2016 Chevrolet Silverado — Pressure Control Solenoid Valve 3 Stuck On
P0797 2017 Chevrolet Silverado — Pressure Control Solenoid Valve 3 Stuck On
P0797 2018 Chevrolet Silverado — Pressure Control Solenoid Valve 3 Stuck On

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 P0797 Chevrolet Code

1. What are common symptoms of OBDII code P0797 in a Chevrolet related to the Pressure Control Solenoid Valve 3 being stuck on?

Common symptoms include harsh shifting, transmission slipping, poor fuel efficiency, and the Check Engine light illuminating.

2. What are possible causes of the Pressure Control Solenoid Valve 3 being stuck on in a Chevrolet triggering code P0797?

Possible causes can include a faulty solenoid valve, low transmission fluid levels, dirty transmission fluid, electrical issues, or mechanical problems within the transmission system.

3. How can I diagnose the cause of OBDII code P0797 in a Chevrolet related to the Pressure Control Solenoid Valve 3 being stuck on?

Diagnosis typically involves using a scan tool to retrieve the trouble codes, conducting a visual inspection of the transmission system, checking the transmission fluid level and condition, and performing a detailed transmission system test.

4. Can I continue driving my Chevrolet with OBDII code P0797 indicating an issue with the Pressure Control Solenoid Valve 3?

It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the transmission system and potentially result in costly repairs.

5. How can I repair OBDII code P0797 in a Chevrolet caused by the Pressure Control Solenoid Valve 3 being stuck on?

Repair options may include replacing the pressure control solenoid valve, flushing and replacing the transmission fluid, addressing any electrical issues, or seeking professional help for a thorough transmission inspection and repair.

6. Is it possible to reset OBDII code P0797 in a Chevrolet related to the Pressure Control Solenoid Valve 3 being stuck on without fixing the underlying issue?

While clearing the trouble code may temporarily turn off the Check Engine light, it is crucial to address the root cause of the problem to prevent further transmission issues.

7. How long does it typically take to repair OBDII code P0797 in a Chevrolet associated with the Pressure Control Solenoid Valve 3 being stuck on?

The repair time can vary depending on the exact cause of the issue, but it may take a few hours to a full day for a qualified mechanic to diagnose and fix the problem.

8. Are there any preventive maintenance steps I can take to avoid OBDII code P0797 related to the Pressure Control Solenoid Valve 3 in my Chevrolet?

Regularly checking and changing the transmission fluid, maintaining proper fluid levels, and addressing any transmission issues promptly can help prevent the occurrence of this code.

9. Can a DIY enthusiast with some mechanical knowledge tackle the repair for OBDII code P0797 in a Chevrolet caused by the Pressure Control Solenoid Valve 3?

While some repairs related to this code may be feasible for a DIY enthusiast, it is recommended to consult a professional mechanic for a thorough diagnosis and repair to ensure the issue is properly resolved.

10. How much does it typically cost to repair OBDII code P0797 in a Chevrolet due to the Pressure Control Solenoid Valve 3 being stuck on?

The cost of repair can vary based on the exact cause of the issue, parts needed, and labor rates in your area, but it may range from a few hundred to over a thousand dollars for a comprehensive repair.