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Engine-Codes – Generic – P0746

P0746 Code - Pressure Control Solenoid 'A' Performance or Stuck Off

Quick Answer

When the OBD-II trouble code P0746 appears, it indicates a problem with the Pressure Control Solenoid 'A' in the transmission system of a vehicle. Common causes include Faulty pressure control solenoid 'A', Wiring or electrical issues in the solenoid circuit, Low transmission fluid level or dirty fluid. 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
P0746 indicates Pressure Control Solenoid 'A' Performance or Stuck Off.
Common causes
Common causes include Faulty pressure control solenoid 'A', Wiring or electrical issues in the solenoid circuit, Low transmission fluid level or dirty fluid.
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 07, 2024
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Code P0746 Description

When the OBD-II trouble code P0746 appears, it indicates a problem with the Pressure Control Solenoid 'A' in the transmission system of a vehicle. The pressure control solenoid is responsible for regulating the hydraulic pressure within the transmission, which is crucial for proper shifting and overall performance. When the solenoid is not functioning correctly, it can lead to issues with gear shifting, transmission slipping, decreased fuel efficiency, and even transmission failure if left unaddressed.

OBDII Code P0746 - Pressure Control Solenoid 'A' Performance or Stuck Off
P0746 Code - Pressure Control Solenoid 'A' Performance or Stuck Off

Common Causes of P0746

  1. Faulty pressure control solenoid 'A'
  2. Wiring or electrical issues in the solenoid circuit
  3. Low transmission fluid level or dirty fluid
  4. Mechanical issues within the transmission
  5. Software or programming issues in the transmission control module

Symptoms of P0746

  1. Harsh or delayed shifting
  2. Transmission slipping
  3. Erratic or unpredictable shifting patterns
  4. Poor fuel efficiency
  5. Illumination of the check engine light

How to Fix P0746

  1. Begin by diagnosing the specific cause of the issue using a scan tool to confirm the P0746 trouble code.
  2. Inspect the pressure control solenoid 'A' and its wiring for any signs of damage or corrosion. Replace the solenoid if necessary.
  3. Check the transmission fluid level and condition. Top up or replace the fluid if it is low or contaminated.
  4. Perform a thorough inspection of the transmission for any mechanical issues that may be contributing to the problem.
  5. Clear the trouble code from the vehicle's computer and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P0746

The cost of repairing a Pressure Control Solenoid 'A' performance or stuck off issue can vary depending on the make and model of the vehicle, the extent of the damage, and the labor rates in your area. On average, you can expect to pay anywhere from $200 to $500 for parts and labor. Keep in mind that this is a rough estimate, and actual costs may differ based on the specific circumstances of your vehicle. It's recommended to consult with a professional mechanic to get a more accurate quote for your particular situation.

What does this mean?

Tech Notes for P0746

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.









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Code P0746 Information for Specific Makes

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 P0746 Code

1. What are the common symptoms of OBDII code P0746?

- Common symptoms of P0746 include harsh or delayed shifting, transmission slipping, poor fuel efficiency, and the Check Engine Light illuminating.

2. What does OBDII code P0746 indicate?

- OBDII code P0746 indicates an issue with the Pressure Control Solenoid 'A' in the transmission, specifically related to performance or being stuck off.

3. What are the possible causes of OBDII code P0746?

- Possible causes of P0746 include a faulty pressure control solenoid 'A', low transmission fluid levels, dirty transmission fluid, electrical issues, or a mechanical problem within the transmission.

4. Can driving with OBDII code P0746 damage the vehicle?

- Continuing to drive with OBDII code P0746 may cause further damage to the transmission and other related components, potentially leading to costly repairs down the line.

5. How can I diagnose OBDII code P0746?

- Diagnosing OBDII code P0746 typically involves using a scan tool to read the code, checking the transmission fluid level and condition, inspecting the pressure control solenoid 'A', and performing a thorough transmission system inspection.

6. Is it safe to continue driving with OBDII code P0746?

- It is not recommended to continue driving with OBDII code P0746, as it can lead to further transmission issues and potential safety hazards on the road.

7. How can OBDII code P0746 be repaired?

- Repairing OBDII code P0746 often involves replacing the pressure control solenoid 'A', flushing and refilling the transmission fluid, addressing any electrical issues, and ensuring proper functioning of the transmission system.

8. Can I reset OBDII code P0746 without fixing the underlying issue?

- Resetting OBDII code P0746 without fixing the underlying issue will only temporarily clear the code, but the problem will likely reoccur until the root cause is addressed.

9. How much does it cost to repair OBDII code P0746?

- The cost to repair OBDII code P0746 can vary depending on the specific issue, labor rates, and parts needed, but it is advisable to budget for potentially significant repair costs involving the transmission system.

10. Can OBDII code P0746 be prevented?

- Regular maintenance, such as timely transmission fluid changes, can help prevent issues like OBDII code P0746. Addressing any transmission-related symptoms promptly can also prevent further damage and costly repairs.

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