4t65e Pressure Control Solenoid Symptoms, Causes & Solution

Are you facing 4t65e transmission problems recently? You can’t operate the vehicle properly and you know the pressure control solenoid might be the cause of it. But how can you be sure about it? 

Take a look at the 4t65e pressure control solenoid symptoms below.

The most common symptoms are hard shifting the transmission, slipping issues, and disengaging torque converter clutch. You will also understand there’s a pressure control solenoid issue if the check engine light is on.

Do you want to know what causes this issue and how to fix it? Keep reading the article to solve this problem.  

What are the 4t65e Pressure Control Solenoid Symptoms?

When you will notice an error code P0746 in your vehicle, this means the 4t65e pressure control solenoid is acting up. At the same time, you will see many problems arising. 

Here are the symptoms explained below for your ease.

Symptom 1:  Transmission Slipping between the Gears

One of the most common symptoms is that the transmission will keep slipping frequently. During this time, the fluid pressure causes internal friction between the plate crutches and drum bands. 

When the slipping issue becomes more dominant, the system will generate a tremendous amount of heat. As a result, the friction clutches and drum bands will get fried or burnt.  

Symptom 2: Having Shifting Problems

Sometimes you will notice that it’s hard to shift the gears. Either you can move the transmission with much difficulty or the transmission doesn’t move at all. 

This means the 4t65e pressure control solenoid has failed to work or has some issues. 

Symptom 3: Torque Converter Clutch Doesn’t Engage

In some cases, transmission slipping or overheating issues arise when the torque converter clutch is not capable of engaging or disengaging. 

Torque Converter Clutch

Source: OnAllCylinders

If you notice such issues in your vehicle, this means you have a faulty 4t65e pressure control solenoid. You need to get the pressure control solenoid into inspection.  

Symptom 4: Illuminating Check Engine Light

Now, your vehicle will also signal you of a problematic 4t65e pressure control solenoid by flashing the check engine light. Sometimes, you might also see shifting issues along with the check engine light on.

Whenever you detect these symptoms, you’ll know something’s wrong with the 4t65e pressure control solenoid.   

Reasons Why the 4t65e Pressure Control Solenoid is Acting Up?

As soon as you identify there’s a problem in the 4t65e pressure control solenoid in your vehicle’s engine, you must detect the causes as well. 

Here is a quick overview table on the reasons and solution of the symptoms. 

The transmission fluid filters are clogged.Clean the transmission fluid passageways thoroughly and use fresh fluid. 
The electrical components are broken or worn out. Replace the broken parts.
The internal components of the transmission have failed.Test the transmission and fix/replace any broken part. 

There are 3 explicit reasons that are responsible for the 4t65e pressure control solenoid to act up and cause problems in your vehicle. 

These reasons are described below with proper explanation.

Clogged Transmission Fluid Passages

If the transmission fluid is contaminated, it will create a clogged situation while passing through the transmission fluid passages. As a result, the gear can’t engage as expected. It results in delayed engagement or disengaging situations. So, the solenoid becomes unable to operate.

Transmission Fluid Passages

Source: Transparts Wearhouse

How to Fix

The only fix here is to use clean transmission fluid passages. You need to drain all the contaminated fluid and pour some fresh fluid in the system. Make sure the transmission fluid is up to the required amount. Also, try to use a transmission fluid with the correct viscosity level.  

Worn Out or Broken Electrical Components 

Sometimes, due to excessive usage, the internal components of the transmission wear off. This directly affects the performance of the 4t65e pressure control solenoid. Again, the same issue arises when the wiring or connectors are faulty and needs replacements. 

How to Fix

If you find any broken or damaged parts inside the transmission, you must replace them immediately. The earlier you change the parts, the sooner you’ll be able to solve problems like overheating systems. 

Internal Transmission Failures

Another reason the 4t65e pressure control solenoid acts up is because of any internal transmission failures. Due to internal malfunction, the current can’t pass through the transmission gears. So, the pressure control solenoid can’t work properly. 

How to Fix

In this case, you need to figure out where the problem is in the transmission. You can use an ohm meter to check if the resistance of the 4t65e pressure control solenoid is okay. Check the wire ground and connectors.(our pick: Etekcity Digital Multimeter)

If you find slightly broken parts, repair them immediately. And if the parts are permanently damaged, you should replace them.   

How to do a 4t65e Pressure Control Solenoid Replacement? [Step-by-Step Process]

If you are a mid-range expert on removing parts from vehicles, I’ll suggest you follow the DIY method. Here’s how you can replace a 4t65e pressure control solenoid.

  • First, you have to find the location of the pressure control solenoid on the transmission. You’ll find it in the valve body of the transmission. 
  • As soon as you locate the solenoid, disconnect the electrical connectors attached.
  • Then, drain the transmission fluid from the transmission pan.
  • After that, you have to remove the bolts holding the solenoid in place.
  • Then, carefully remove the old solenoid and throw it out.
  • Next, clean the area where the new solenoid will be installed. Secure it with the bolts that were removed.
  • Then, reconnect the electrical connector to the new solenoid.
  • After that, refill the transmission with the appropriate amount of fluid. Make sure the fluid is at the correct level of viscosity. 
  • Finally, test drive the vehicle to ensure proper operation of the transmission.

This is how you can perform a complete 4t65e pressure control solenoid replacement at home. 


What can damage a solenoid?

A solenoid can be damaged mostly because of excessive voltage supply. When there is an electrical surge or spikes, the extra voltage burns the coils of the solenoid. This makes the solenoid completely damaged and unusable. 

How much does it cost to replace a pressure control solenoid?

It will cost you approximately $200-$250 to replace a pressure control solenoid from a repair shop. To break it down, the labor is cost is around $60 to $100 per hour and the solenoid price is around $50-$100.  But it’ll cost more if you take it to the manufacturer. 

Final Words

So, hopefully now you know what the 4t65e pressure control solenoid symptoms. Depending on the symptoms, you should figure out the main issue and fix it immediately. However, I would recommend not to apply DIY tactics if you are a beginner. It’s better to repair the solenoid by professionals from a repair shop.  


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