AutoCodes – Buick – P2726 Buick

P2726 Buick Code - Pressure Control Solenoid Valve 5 Intermittent

Quick Answer

The pressure control solenoid 5 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: P2726 Buick indicates Pressure Control Solenoid Valve 5 Intermittent.
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 330

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 P2726 Buick Description

The pressure control solenoid 5 is part of the control solenoid valve assembly which has no serviceable parts. The normally low-pressure control solenoid 5 regulates and directs oil pressure to the 1-2-3-4 clutch regulator valve and 1-2-3-4 clutch boost valve. Increasing pressure control solenoid 5 pressure increases pressure to the 1-2-3-4 clutch. The Transmission Control Module varies the current to the pressure control solenoid 5 through a low-side driver. Increasing the current to pressure control solenoid 5 increases oil pressure by closing OFF the solenoid exhaust port. Decreasing the current to pressure control solenoid 5 decreases oil pressure by opening the exhaust port. Pressure control solenoid 5 power is supplied by the Transmission Control Module through a high side driver. The high-side driver protects the circuit and components from excessive current flow. If excessive current flow is detected, the high side driver will turn OFF. When the fault is corrected, the high-side driver will reset.

OBDII Code P2726 Buick - Pressure Control Solenoid Valve 5 Intermittent - AutoCodes.com — P2726 Buick Code - Pressure Control Solenoid Valve 5 Intermittent

What does this mean?

What are the Possible Causes of the DTC P2726 Buick?

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 P2726 Buick?

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 P2726 Buick 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 P2726 Buick code?

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Need Help with the Code?

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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 P2726 Buick Code

1. What does the OBDII code P2726 mean on a Buick?

The P2726 code indicates that the Pressure Control Solenoid Valve 5 is experiencing intermittent issues, which may affect the transmission's ability to regulate hydraulic pressure.

2. What are the common symptoms of a P2726 code in a Buick?

Symptoms may include harsh or delayed shifting, transmission slipping, poor fuel economy, and the check engine light illuminating.

3. What causes the P2726 code in a Buick?

Common causes include a faulty pressure control solenoid, wiring issues such as damaged or corroded connectors, low transmission fluid, or internal transmission problems.

4. Can I drive my Buick with a P2726 code?

While the vehicle may still be drivable, it is not recommended as it can cause further damage to the transmission and result in unsafe driving conditions.

5. How is the P2726 code diagnosed in a Buick?

A mechanic will use a scan tool to confirm the code, inspect the transmission fluid level and condition, check the wiring and connectors for damage, and test the solenoid's operation.

6. How do I fix the P2726 code on my Buick?

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

7. How much does it cost to repair the P2726 code in a Buick?

The cost can vary widely depending on the specific repair, ranging from $200 to $1,500 or more if transmission rebuilds are necessary.

8. Can low transmission fluid cause the P2726 code in a Buick?

Yes, low or contaminated transmission fluid can affect solenoid performance and cause the P2726 code.

9. Do I need to replace the entire transmission to fix the P2726 code on a Buick?

Not always. In many cases, replacing the solenoid or repairing wiring issues can resolve the problem without requiring a full transmission replacement.

10. How can I prevent the P2726 code from occurring in my Buick?

Regular maintenance, including checking and replacing transmission fluid as needed, and inspecting wiring and connectors can help prevent this code from appearing.