AutoCodes – Buick – P2718 Buick

P2718 Buick Code - Pressure Control Solenoid 4 Control Circuit Open

Quick Answer

The pressure control solenoid 4 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: P2718 Buick indicates Pressure Control Solenoid 4 Control 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 325

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 P2718 Buick Description

The pressure control solenoid 4 is part of the control solenoid valve assembly which has no serviceable parts. The normally low-pressure control solenoid 4 regulates and directs oil pressure to the 2-6 clutch regulator valve. Increasing pressure control solenoid 4 pressure increases pressure to the 2-6 clutch regulator valve. The Transmission Control Module (TCM) varies the current to the pressure control solenoid 4 through a low-side driver. Increasing the current to pressure control solenoid 4 increases oil pressure by closing OFF the solenoid exhaust port. Decreasing the current to pressure control solenoid 4 decreases oil pressure by opening the exhaust port. Pressure control solenoid 4 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 P2718 Buick - Pressure Control Solenoid 4 Control Circuit Open - AutoCodes.com — P2718 Buick Code - Pressure Control Solenoid 4 Control Circuit Open

What does this mean?

What are the Possible Causes of the DTC P2718 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 P2718 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 P2718 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 P2718 Buick Code

1. What are the common symptoms of OBDII code P2718 in a Buick related to the Pressure Control Solenoid 4 Control Circuit Open?

- Common symptoms include harsh shifting, difficulty shifting gears, transmission slipping, and decreased fuel efficiency.

2. What are the possible causes of OBDII code P2718 in a Buick related to the Pressure Control Solenoid 4 Control Circuit Open?

- Possible causes include a faulty pressure control solenoid, damaged wiring or connectors, low transmission fluid levels, or a malfunctioning transmission control module.

3. How can I diagnose the issue causing OBDII code P2718 in my Buick related to the Pressure Control Solenoid 4 Control Circuit Open?

- Diagnose by conducting a visual inspection of wiring and connectors, checking transmission fluid levels, performing a solenoid resistance test, and using a scan tool to monitor transmission data.

4. Can I continue driving my Buick with OBDII code P2718 related to the Pressure Control Solenoid 4 Control Circuit Open?

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

5. How can I repair OBDII code P2718 in my Buick related to the Pressure Control Solenoid 4 Control Circuit Open?

- Repair options include replacing the pressure control solenoid, repairing damaged wiring or connectors, ensuring proper transmission fluid levels, and reprogramming the transmission control module if necessary.

6. Will resetting the OBDII code P2718 in my Buick related to the Pressure Control Solenoid 4 Control Circuit Open make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the code is not addressed, it is likely to return.

7. How much does it typically cost to repair OBDII code P2718 in a Buick related to the Pressure Control Solenoid 4 Control Circuit Open?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $200 to $600 including parts and labor.

8. Can a DIY enthusiast fix OBDII code P2718 in their Buick related to the Pressure Control Solenoid 4 Control Circuit Open?

- Depending on the level of expertise and access to tools, some DIY enthusiasts may be able to diagnose and repair this issue, especially if it involves simple tasks like checking wiring connections or replacing the solenoid.

9. Are there any preventive maintenance tips to avoid encountering OBDII code P2718 in a Buick related to the Pressure Control Solenoid 4 Control Circuit Open?

- Regularly checking and maintaining proper transmission fluid levels, addressing any transmission issues promptly, and ensuring regular vehicle inspections can help prevent this code from appearing.