AutoCodes – Chevrolet – P1751 Chevrolet

P1751 Chevrolet Code - Shift Valve 1 Performance

Quick Answer

The Shift Solenoid (SS) 1 is part of the Control Solenoid Valve Assembly, which has no serviceable parts. Common causes include Faulty Control Solenoid Valve Assembly, Control Solenoid Valve Assembly harness is open or shorted, Control Solenoid Valve Assembly circuit poor electrical connection. 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: P1751 Chevrolet indicates Shift Valve 1 Performance.
Common causes: Common causes include Faulty Control Solenoid Valve Assembly, Control Solenoid Valve Assembly harness is open or shorted, Control Solenoid Valve Assembly circuit poor electrical connection.
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 5,363

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 24, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1751 Chevrolet Description

The Shift Solenoid (SS) 1 is part of the Control Solenoid Valve Assembly, which has no serviceable parts. SS 1 provides fluid pressure to control the operation of the clutch select valve 2, which is located in the control valve lower body assembly. SS 1, in conjunction with clutch select valve 2, controls fluid to the R1 and 4-5-6 clutches. A diagnostic test is performed by the Transmission Control Module (TCM) to determine the state of the clutch select valve 2. During this diagnostic test, the TCM commands the SS 1 ON, supplying pressure to move the clutch select valve 2 toward its spring. At the same time, line pressure is elevated slightly to assist the spring side pressure. If the spring is broken, or the clutch select valve 2 cannot move due to another mechanical condition the Diagnostic Trouble Code (DTC) will set.

OBDII Code P1751 Chevrolet - Shift Valve 1 Performance - AutoCodes.com — P1751 Chevrolet Code - Shift Valve 1 Performance

What does this mean?

What are the Possible Causes of the DTC P1751 Chevrolet?

Faulty Control Solenoid Valve Assembly
Control Solenoid Valve Assembly harness is open or shorted
Control Solenoid Valve Assembly circuit poor electrical connection

How to Fix the DTC P1751 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 P1751 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.

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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 P1751 Chevrolet Code

1. What are common symptoms of OBDII code P1751 (Chevrolet) Shift Valve 1 Performance?

Common symptoms may include harsh shifting, erratic shifting, transmission slipping, and the transmission going into "limp mode."

2. What are the possible causes of OBDII code P1751 (Chevrolet) Shift Valve 1 Performance?

Possible causes may include a faulty shift solenoid, low transmission fluid levels, a clogged transmission filter, or a malfunctioning transmission control module.

3. How can I diagnose OBDII code P1751 (Chevrolet) Shift Valve 1 Performance?

Diagnosing this code typically involves checking the transmission fluid level and condition, inspecting the shift solenoid, conducting a visual inspection for any damaged wiring or connectors, and using a scan tool to retrieve additional transmission codes.

4. Can I still drive my vehicle with OBDII code P1751 (Chevrolet) Shift Valve 1 Performance?

It is not recommended to continue driving your vehicle with this code present, as it can lead to further damage to the transmission. It is best to address the issue promptly.

5. How do I repair OBDII code P1751 (Chevrolet) Shift Valve 1 Performance?

Repair may involve replacing the faulty shift solenoid, ensuring proper transmission fluid levels, changing the transmission filter, and clearing the trouble code with a scan tool.

6. Will resetting the check engine light resolve OBDII code P1751 (Chevrolet) Shift Valve 1 Performance?

Resetting the check engine light may temporarily clear the code, but it will not fix the underlying issue causing the code to trigger. Proper diagnosis and repair are necessary.

7. How much does it cost to fix OBDII code P1751 (Chevrolet) Shift Valve 1 Performance?

The cost of fixing this issue can vary depending on the specific cause of the problem, the labor rates in your area, and whether you choose to do the repairs yourself or take your vehicle to a professional mechanic.

8. Can a DIY enthusiast repair OBDII code P1751 (Chevrolet) Shift Valve 1 Performance?

Some aspects of the repair, such as checking transmission fluid levels and changing the transmission filter, can be done by a DIY enthusiast. However, diagnosing and replacing the shift solenoid may require specialized tools and expertise.

9. How urgent is it to address OBDII code P1751 (Chevrolet) Shift Valve 1 Performance?

It is recommended to address this code as soon as possible to prevent further damage to the transmission. Ignoring the issue can lead to more severe and costly repairs down the line.

10. Are there any preventive measures to avoid OBDII code P1751 (Chevrolet) Shift Valve 1 Performance?

Regularly checking and maintaining proper transmission fluid levels, changing the transmission fluid and filter at recommended intervals, and avoiding harsh driving habits can help prevent issues that may trigger this trouble code.