Engine-Codes.com
Engine-Codes – Lexus – P0746 Lexus

P0746 Lexus Code - Pressure Control Solenoid 'A' Performance

Quick Answer

The P0746 diagnostic trouble code indicates that the Pressure Control Solenoid 'A' is not performing within the expected parameters. Common causes include Faulty pressure control solenoid 'A', Low transmission fluid levels or dirty fluid, Electrical issues such as a short circuit or wiring damage. 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 Lexus indicates Pressure Control Solenoid 'A' Performance.
Common causes
Common causes include Faulty pressure control solenoid 'A', Low transmission fluid levels or dirty fluid, Electrical issues such as a short circuit or wiring damage.
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 Aug 18, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0746 Lexus Description

The P0746 diagnostic trouble code indicates that the Pressure Control Solenoid 'A' is not performing within the expected parameters. This solenoid is responsible for regulating the hydraulic pressure within the transmission, which is crucial for smooth gear shifting and overall transmission operation. When this solenoid malfunctions or operates improperly, it can lead to issues such as harsh shifting, delayed engagement, slipping gears, or even complete transmission failure.

OBDII Code P0746 Lexus - Pressure Control Solenoid 'A' Performance
P0746 Lexus Code - Pressure Control Solenoid 'A' Performance

Common Causes of P0746 Lexus

  1. Faulty pressure control solenoid 'A'
  2. Low transmission fluid levels or dirty fluid
  3. Electrical issues such as a short circuit or wiring damage
  4. Internal transmission damage
  5. Malfunctioning transmission control module

Symptoms of P0746 Lexus

  1. Harsh shifting between gears
  2. Delayed engagement when shifting from park to drive
  3. Slipping gears while driving
  4. Decreased fuel efficiency
  5. Illumination of the check engine light

How to Fix P0746 Lexus

  1. Begin by diagnosing the specific cause of the issue, which may involve performing a transmission fluid level check, inspecting the pressure control solenoid 'A', and conducting a thorough transmission system scan.
  2. If the pressure control solenoid 'A' is faulty, it will need to be replaced. This typically involves draining the transmission fluid, removing the transmission pan, locating the solenoid, and installing a new one.
  3. Check and replenish transmission fluid levels if necessary, ensuring that the fluid is clean and at the correct level.
  4. Inspect the electrical connections to the pressure control solenoid 'A' and repair any damaged wiring or connections.
  5. Clear the diagnostic trouble codes, reset the transmission control module, and perform a test drive to ensure that the issue has been resolved.

Cost to Fix P0746 Lexus

The typical cost for repairing a Pressure Control Solenoid 'A' Performance issue can range from $200 to $500, including parts and labor. However, it is essential to note that prices can vary significantly based on the vehicle's make and model, the severity of the issue, and the labor rates in your area. Additionally, additional costs may be incurred if there are other underlying transmission problems that need to be addressed. It's recommended to consult with a qualified mechanic or repair shop to get a more accurate estimate for your specific situation.

What does this mean?

Tech Notes for P0746 Lexus

When a transmission solenoid malfunction, 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.

Need more information about the P0746 Lexus code?

Need more information on how to fix the P0746 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0746 Lexus code diagnosed by a professional: Find a repair shop in your area

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 Lexus Code

No Frequently Asked Questions about P0746 Lexus Code found.

Discuss the causes and fixes for P0746 Lexus OBDII Code

Submit a New Comment

Code P0746 Lexus comments

No comments found for this page.