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.
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.
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.
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:
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.
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.
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