AutoCodes – Volkswagen – P0747 Volkswagen

P0747 Volkswagen 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 Volkswagen 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.

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Code Popularity 13,454

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 Jan 29, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0747 Volkswagen 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 Volkswagen - Pressure Control Solenoid 'A' Stuck On - AutoCodes.com — P0747 Volkswagen Code - Pressure Control Solenoid 'A' Stuck On

What does this mean?

What are the Possible Causes of the DTC P0747 Volkswagen?

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 Volkswagen?

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 is 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 removing 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0747 Volkswagen 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 P0747 Volkswagen Code

1. What are the common symptoms of OBDII code P0747 in a Volkswagen related to the Pressure Control Solenoid 'A' Stuck On?

- Common symptoms include harsh shifting, transmission slippage, decreased fuel efficiency, and the transmission staying in "limp mode."

2. What can cause the Pressure Control Solenoid 'A' to become stuck on in a Volkswagen, triggering OBDII code P0747?

- Potential causes include a faulty solenoid, low transmission fluid levels, electrical issues, or a malfunctioning transmission control module.

3. How can I diagnose OBDII code P0747 in my Volkswagen indicating the Pressure Control Solenoid 'A' is stuck on?

- Diagnosis involves using a scan tool to read the code, checking the transmission fluid level and condition, and inspecting the wiring and connections to the solenoid.

4. Is it safe to continue driving my Volkswagen with OBDII code P0747 indicating the Pressure Control Solenoid 'A' is stuck on?

- It is not recommended to drive the vehicle with this code active, as it can lead to further damage to the transmission and potentially leave you stranded.

5. Can I reset OBDII code P0747 in my Volkswagen related to the Pressure Control Solenoid 'A' Stuck On by disconnecting the battery?

- While disconnecting the battery may clear the code temporarily, it is important to address the underlying issue causing the code to prevent further transmission problems.

6. How much does it typically cost to repair OBDII code P0747 in a Volkswagen caused by the Pressure Control Solenoid 'A' being stuck on?

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

7. Can I replace the Pressure Control Solenoid 'A' in my Volkswagen myself to fix OBDII code P0747?

- While some experienced DIYers may be able to replace the solenoid themselves, it is recommended to have a professional mechanic handle the repair to ensure it is done correctly.

8. Will fixing OBDII code P0747 in my Volkswagen require a transmission fluid flush?

- In some cases, fixing this code may involve a transmission fluid flush to ensure the system is clean and free of contaminants that could affect the solenoid's operation.

9. How long does it typically take to repair OBDII code P0747 in a Volkswagen due to the Pressure Control Solenoid 'A' being stuck on?

- The repair time can vary depending on the exact cause and the shop's workload, but it may take anywhere from a few hours to a full day to complete the repair.

10. Can OBDII code P0747 in a Volkswagen come back after the repair has been done to address the Pressure Control Solenoid 'A' being stuck on?

- If the underlying issue causing the code is not properly resolved, it is possible for the code to return. It is essential to address all potential causes to prevent this from happening.