AutoCodes – Generic – P0747

P0747 Code - Pressure Control Solenoid 'A' Stuck On

Quick Answer

The Pressure Control (PC) Solenoid Valve an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Pressure Control Solenoid. 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: P0747 indicates Pressure Control Solenoid 'A' Stuck On.
Common causes: Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Pressure Control Solenoid.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 24,454

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 Aug 02, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0747 Description

The Pressure Control (PC) Solenoid Valve an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. As current flow is increased, the magnetic field produced by the coil moves the solenoid’s plunger further away from the exhaust port. Opening the exhaust port decreases the output fluid pressure regulated by the PC solenoid valve, which ultimately decreases line pressure. The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the Transmission Control Module (TCM).

OBDII Code P0747 - Pressure Control Solenoid 'A' Stuck On - AutoCodes.com — P0747 Code - Pressure Control Solenoid 'A' Stuck On

What does this mean?

What are the Possible Causes of the DTC P0747?

Low transmission fluid level
Dirty transmission fluid
Faulty Pressure Control Solenoid
Pressure Control Solenoid harness is open or shorted
Pressure Control Solenoid circuit poor electrical connection

How to Fix the DTC P0747?

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 a transmission solenoid has malfunctioned, 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 dirty, it's recommended to change the transmission fluid and if possible, remove the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a mechanical transmission failure, and that the transmission will need to be rebuilt or replaced.

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0747 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 P0747 code?

Need more information on how to fix the P0747 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0747 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P0747 Acura — Clutch Pressure Control Solenoid 'A' Stuck On
P0747 Audi — Pressure Control Solenoid 'A' Stuck On
P0747 Chevrolet — Transmission Control Solenoid Valve 1 Stuck On
P0747 GMC — Transmission Control Solenoid Valve 1 Stuck On
P0747 Honda — Clutch Pressure Control Solenoid 'A' Stuck On
P0747 Hyundai — Pressure Control Solenoid 'A' Stuck On
P0747 Mazda — Pressure Control Solenoid 'A' Stuck On
P0747 Mercedes-Benz — Pressure Control Solenoid 'A' Stuck On
P0747 Volkswagen — Pressure Control Solenoid 'A' Stuck On

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 P0747 Code

1. What are the common symptoms of OBDII code P0747 (Pressure Control Solenoid 'A' Stuck On)?

- Common symptoms include harsh shifting, transmission slippage, decreased fuel efficiency, and illuminated Check Engine Light.

2. What can cause the Pressure Control Solenoid 'A' to get stuck on and trigger code P0747?

- The main causes can be a faulty pressure control solenoid, low transmission fluid level, a clogged transmission filter, or internal transmission issues.

3. How serious is the OBDII code P0747 (Pressure Control Solenoid 'A' Stuck On)?

- Ignoring this code can lead to further damage to the transmission and potentially result in costly repairs if left unresolved.

4. Can I drive my vehicle with OBDII code P0747 (Pressure Control Solenoid 'A' Stuck On)?

- It is not recommended to drive the vehicle with this code present, as it can cause further damage to the transmission and affect the vehicle's drivability.

5. How do I diagnose and repair OBDII code P0747 (Pressure Control Solenoid 'A' Stuck On)?

- Diagnosis typically involves checking the transmission fluid level, inspecting the wiring and connectors to the solenoid, and testing the solenoid itself. Repair may involve replacing the faulty solenoid or addressing any underlying transmission issues.

6. Can a DIY enthusiast fix OBDII code P0747 (Pressure Control Solenoid 'A' Stuck On)?

- While diagnosing the issue may be possible for some DIY enthusiasts, repairing the problem often requires specialized tools and expertise, making it a job best left to professional mechanics.

7. How much does it cost to repair OBDII code P0747 (Pressure Control Solenoid 'A' Stuck On)?

- The cost of repairing this code can vary depending on the underlying issue, but it typically ranges from $200 to $600, including parts and labor.

8. Will resetting the Check Engine Light resolve OBDII code P0747 (Pressure Control Solenoid 'A' Stuck On)?

- Resetting the Check Engine Light may temporarily turn off the warning indicator, but the underlying issue causing the code will still need to be diagnosed and repaired to prevent further damage.

9. Can a transmission flush help resolve OBDII code P0747 (Pressure Control Solenoid 'A' Stuck On)?

- In some cases, a transmission flush may help if the issue is related to dirty or contaminated transmission fluid. However, it is not a guaranteed fix for a stuck pressure control solenoid.

10. How can I prevent OBDII code P0747 (Pressure Control Solenoid 'A' Stuck On) from occurring?

- Regular maintenance, such as checking and changing the transmission fluid at recommended intervals, can help prevent issues like a stuck pressure control solenoid and the associated OBDII code.