P0745 Code: Pressure Control Solenoid “A” Malfunction

The PCM will log a P0745 code if the pressure control solenoid A shows a general malfunction. Learn more about this code’s meaning, symptoms, and causes in the following guide.

What Does the P0745 Code Mean?

The diagnostic trouble code (DTC) P0745 indicates “Pressure Control Solenoid “A” Malfunction.”

The PCM regularly checks the pressure control solenoids. If the controller doesn’t get the right response from solenoid “A”, it will set the generic code P0745.

Note on Transmission Line Pressure and OBD Codes

Transmission line pressure determines shift timing and quality and if the ECM controlling the pressure control solenoid alters its duty cycle and the line pressure doesn’t meet the desired target, the ECM will store a DTC. It’s a gray area, but sometimes this kind of failure is referred to as a “performance” fault. This kind of fault can mean that the change didn’t happen or that it didn’t happen within the expected time window.

Using a feedback sensor to determine compliance is known as a “rationality check” because the command is given and another input is used to verify that the requested change took place.

If the electrical circuit fails, it will store a different code and the unpowered solenoid will drive the line pressure so that it defaults to maximum pressure (hard shifts) to protect the clutches.

Note: The definition of code P0745 can differ according to the vehicle manufacturer. Check the appropriate repair manual or repair database for the exact code definition.

What are the Common Causes of the P0745 Code?

• Bad pressure control solenoid
• Contaminants (dirt, water, etc.) in the transmission fluid
• Transmission filter is dirty or clogged
• Faulty transmission pump
• Bad transmission valve body
• Restricted hydraulic passages
• Corrosion or damage on the connector 
• Bad or damaged wiring
• Bad PCM

What are the Common Symptoms of P0745 Code?

• PCM puts vehicle in safe mode/limp mode
• Transmission slippage while shifting between gears
• Overheated transmission
• Transmission catches in gear
• Check engine light turns on

How to Diagnose the P0745 Code

The P0745 code is a generic code that various makes and models can log. However, this does not mean that there is a one-size-fits-all solution to identify its underlying problem.

If you’re not confident about conducting diagnostic tests on your vehicle, it’s a good idea to bring it to a professional mechanic. Otherwise, you can go ahead and diagnose the issue yourself. To help you get started, here is a video that can give you an idea of what the process might involve:

How to Fix the P0745 Code

Fixing a P0745 code can become a challenging task if you don’t have the right tools and know-how to test the pressure control solenoid. In most cases, it’s best to leave the job to professionals.
For DIYers with advanced technical knowledge and hands-on experience who prefer to test and replace the transmission pressure control solenoid A on their own, it will be helpful to rely on the appropriate repair manual or refer to an online repair database.

How to Get a New Transmission Pressure Control Solenoid

A P0745 code is typically caused by a malfunctioning transmission pressure control solenoid, which could make driving a hassle. To clear the code, the best course of action is usually to replace it with a new transmission pressure control solenoid. Fortunately, shopping for a top-notch replacement is a breeze here at CarParts.com.

Getting a replacement transmission pressure control solenoid doesn’t have to be difficult. Simply use your mobile phone to visit CarParts.com and use the vehicle selector tool to view compatible parts. Streamline your search further by adjusting the filters to match your preferred brand, specs, and price range.

We source our parts from some of the most trusted manufacturers in the industry, and our warehouses are strategically located all across the US. You’ll be able to receive your order in a matter of days no matter which state you live in.

Find and order what you need with just a few clicks. Check out our collection of high-quality transmission pressure control solenoids at CarParts.com.