AutoCodes – Pontiac – P0751 Pontiac

P0751 Pontiac Code - 1-2 Shift Solenoid Valve Performance - No First or Fourth Gear

Quick Answer

The 1-2 Shift Solenoid (SS) valve controls the fluid flow acting on the 1-2 and 3-4 shift valves. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty 1-2 Shift Solenoid valve. 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: P0751 Pontiac indicates 1-2 Shift Solenoid Valve Performance - No First or Fourth Gear.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty 1-2 Shift Solenoid valve.
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 13,824

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 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0751 Pontiac Description

The 1-2 Shift Solenoid (SS) valve controls the fluid flow acting on the 1-2 and 3-4 shift valves. The 1-2 SS valve is a normally-open exhaust valve that is used with the 2-3 SS valve, in order to allow four different shifting combinations.

OBDII Code P0751 Pontiac - 1-2 Shift Solenoid Valve Performance - No First or Fourth Gear - AutoCodes.com — P0751 Pontiac Code - 1-2 Shift Solenoid Valve Performance - No First or Fourth Gear

What does this mean?

What are the Possible Causes of the DTC P0751 Pontiac?

Low transmission fluid level
Dirty transmission fluid
Faulty 1-2 Shift Solenoid valve
1-2 Shift Solenoid valve harness or connectors
1-2 Shift Solenoid valve circuit is open or shorted

How to Fix the DTC P0751 Pontiac?

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 the a transmission solenoid is stuck off, 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 very dirty, it is recommend changing 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 transmission mechanical failure and that the transmission will need to be rebuilt or replaced.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0751 Pontiac 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 P0751 Pontiac Code

1. What are the common symptoms of OBDII code P0751 in a Pontiac related to the 1-2 shift solenoid valve performance issue?

- Common symptoms include harsh shifting, delayed or erratic shifting between first and second gears, and the transmission not engaging first or fourth gear.

2. What could cause the OBDII code P0751 to trigger in a Pontiac, indicating a problem with the 1-2 shift solenoid valve performance?

- The code can be triggered by issues such as a faulty shift solenoid, low transmission fluid level, dirty or contaminated transmission fluid, electrical problems, or mechanical failures within the transmission.

3. How can I diagnose the OBDII code P0751 in my Pontiac if I suspect a problem with the 1-2 shift solenoid valve performance?

- Diagnosing the issue typically involves performing a thorough inspection of the transmission fluid level and condition, checking for any visible leaks, and using a scan tool to monitor the shift solenoid's performance.

4. What are some repair tips for addressing the OBDII code P0751 in a Pontiac indicating a malfunction with the 1-2 shift solenoid valve?

- Repair tips may include replacing the faulty shift solenoid, performing a transmission fluid flush and filter change, checking and repairing any damaged wiring or connectors, and ensuring proper transmission fluid level and quality.

5. Can I continue to drive my Pontiac with the OBDII code P0751 related to the 1-2 shift solenoid valve issue?

- It is not recommended to continue driving the vehicle with this issue as it can lead to further damage to the transmission and potentially cause safety hazards on the road.

6. How much does it typically cost to repair the OBDII code P0751 in a Pontiac caused by a malfunctioning 1-2 shift solenoid valve?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from a few hundred dollars for a shift solenoid replacement to over a thousand dollars for more extensive transmission repairs.

7. Are there any preventative maintenance steps I can take to avoid the OBDII code P0751 in my Pontiac related to the 1-2 shift solenoid valve?

- Regularly checking and maintaining proper transmission fluid levels, conducting routine transmission fluid flushes and filter changes, and addressing any transmission issues promptly can help prevent the occurrence of this code.