AutoCodes – Buick – P2727 Buick

P2727 Buick Code - Pressure Control Solenoid Valve 5 Circuit Open

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: P2727 Buick indicates Pressure Control Solenoid Valve 5 Circuit Open.
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 420

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 P2727 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 P2727 Buick - Pressure Control Solenoid Valve 5 Circuit Open - AutoCodes.com — P2727 Buick Code - Pressure Control Solenoid Valve 5 Circuit Open

What does this mean?

What are the Possible Causes of the DTC P2727 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 P2727 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 P2727 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.

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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 P2727 Buick Code

1. What does OBDII code P2727 mean on a Buick?

P2727 indicates that the Powertrain Control Module (PCM) has detected an open circuit in the Pressure Control Solenoid Valve 5, which helps regulate hydraulic pressure in the transmission.

2. What are the common symptoms of code P2727 in a Buick?

Symptoms may include harsh or delayed shifting, slipping gears, transmission overheating, decreased fuel efficiency, and illumination of the check engine light.

3. What causes the P2727 code to appear in a Buick?

Common causes include a faulty pressure control solenoid, damaged or corroded wiring/connectors in the solenoid circuit, low transmission fluid, or a malfunctioning PCM.

4. Can I drive my Buick with the P2727 code?

It is not recommended to drive with this code active, as it can cause further damage to the transmission and lead to unsafe driving conditions.

5. How do I diagnose the P2727 code on my Buick?

Start by checking the transmission fluid level and condition, inspecting the wiring and connectors for damage or corrosion, and testing the pressure control solenoid for proper operation.

6. How can I fix the P2727 code on a Buick?

Repairs may include replacing the pressure control solenoid, repairing or replacing damaged wiring/connectors, refilling or flushing the transmission fluid, or reprogramming or replacing the PCM if necessary.

7. How much does it cost to repair the P2727 code on a Buick?

The repair cost varies depending on the issue, ranging from $150â€“$400 for solenoid replacement to more for PCM replacement or extensive wiring repairs.

8. How do I prevent the P2727 code from recurring in my Buick?

Regularly maintain your transmission by checking fluid levels, performing fluid changes as recommended, and addressing any transmission issues promptly.

9. Can low transmission fluid cause the P2727 code on a Buick?

Yes, low or contaminated transmission fluid can contribute to this code by affecting the hydraulic pressure needed for the solenoid to function properly.

10. Do I need a professional mechanic to fix the P2727 code on my Buick?

While basic checks like fluid level inspection can be done yourself, diagnosing and repairing solenoid or wiring issues often requires professional expertise and equipment.