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P0747 Hyundai Code - Pressure Control Solenoid 'A' Stuck On

Quick Answer

The P0747 diagnostic trouble code (DTC) for Hyundai vehicles indicates an issue with the Pressure Control Solenoid 'A' being stuck on. Common causes include Faulty pressure control solenoid 'A', Wiring or connector issues, Low transmission fluid levels. 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 Hyundai indicates Pressure Control Solenoid 'A' Stuck On.
Common causes
Common causes include Faulty pressure control solenoid 'A', Wiring or connector issues, Low transmission fluid levels.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P0747 Hyundai Description

The P0747 diagnostic trouble code (DTC) for Hyundai vehicles indicates an issue with the Pressure Control Solenoid 'A' being stuck on. This solenoid is a crucial component of the transmission system, responsible for regulating hydraulic pressure within the transmission. When the solenoid is stuck in the 'on' position, it can lead to various problems with the transmission's operation.

OBDII Code P0747 Hyundai - Pressure Control Solenoid 'A' Stuck On
P0747 Hyundai Code - Pressure Control Solenoid 'A' Stuck On

Common Causes of P0747 Hyundai

  1. Faulty pressure control solenoid 'A'
  2. Wiring or connector issues
  3. Low transmission fluid levels
  4. Contaminated or degraded transmission fluid
  5. Mechanical issues within the transmission

Symptoms of P0747 Hyundai

  1. Harsh or delayed shifting
  2. Erratic gear changes
  3. Transmission slipping
  4. Lack of power or acceleration
  5. Illuminated check engine light

How to Fix P0747 Hyundai

  1. Begin by diagnosing the specific cause of the issue, such as testing the pressure control solenoid 'A' for proper function.
  2. Inspect the wiring and connectors associated with the solenoid for any damage or corrosion.
  3. Check the transmission fluid level and condition, topping up or replacing as necessary.
  4. If the solenoid is determined to be faulty, replace it with a new one and ensure proper installation.
  5. Clear the DTC and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P0747 Hyundai

The typical repair costs for addressing a P0747 code can vary depending on the specific cause of the issue and the labor rates at auto repair shops. In general, the replacement of a pressure control solenoid 'A' can range from $150 to $300 for the part alone. Labor costs can add an additional $100 to $200, resulting in a total repair cost of $250 to $500. It's important to keep in mind that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the extent of the repairs needed. Checking with local auto repair shops for more accurate pricing is recommended.

What does this mean?

Tech Notes for P0747 Hyundai

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.

When is the Code Detected?

The gear required by the Engine Control Module (ECM) does not match the actual gear when driving

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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 Hyundai Code

1. What are the common symptoms of OBDII code P0747 (Hyundai)?

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

2. What does the OBDII code P0747 (Hyundai) indicate?

- This code indicates that the pressure control solenoid 'A' is stuck on in the transmission.

3. What are the possible causes of OBDII code P0747 (Hyundai)?

- The possible causes include a faulty pressure control solenoid, wiring issues, low transmission fluid level, or a failed transmission pump.

4. How serious is OBDII code P0747 (Hyundai)?

- This code should be addressed promptly as it can lead to further damage to the transmission if left untreated.

5. How can I diagnose OBDII code P0747 (Hyundai)?

- Diagnosis involves using an OBDII scanner to retrieve the code, checking the transmission fluid level and condition, and inspecting the pressure control solenoid and its wiring.

6. Can I drive with OBDII code P0747 (Hyundai) present?

- It is not recommended to drive with this code present, as it can cause transmission issues and potential safety hazards.

7. How can OBDII code P0747 (Hyundai) be repaired?

- Repair typically involves replacing the pressure control solenoid 'A', addressing any wiring issues, ensuring proper transmission fluid levels, and testing the transmission operation.

8. Will resetting the OBDII code P0747 (Hyundai) make it go away?

- Resetting the code may temporarily turn off the Check Engine light, but if the underlying issue is not addressed, the code is likely to reappear.

9. Are there any DIY repair tips for OBDII code P0747 (Hyundai)?

- While some may attempt DIY repairs, it is recommended to have a professional diagnose and repair this code due to the complexity of transmission systems.

10. How much does it cost to fix OBDII code P0747 (Hyundai)?

- The cost of repair can vary depending on the specific issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

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