P0746 Code: Pressure Control Solenoid “A” Performance / Stuck Off
The OBD-II system, along with different trouble codes, help notify you of a possible error within your vehicle. To view these trouble codes, you’ll need to plug a scan tool into your vehicle’s OBD-II port. One of the codes you might encounter is the P0746 code. Find out what this code means, as well as its possible triggers and signs in this brief guide.
What Does the P0746 Code Mean?
Diagnostic trouble code (DTC) P0746 stands for “Pressure Control Solenoid “A” Performance/Stuck Off.” This code sets when the transmission control module (TCM) detects an issue with a transmission pressure control solenoid. Some automatic transmissions have more than one pressure control solenoid. This trouble code pertains to the solenoid designated “A.”
The TCM uses the pressure control solenoid to control line pressure inside of the transmission. The TCM or the powertrain control module sets the P0746 code if it detects the pressure control solenoid isn’t working properly or is stuck in the “off” position.
If this code sets, you need to take your vehicle to a shop for repairs as soon as possible. If left unaddressed, the P0746 can lead to more severe issues later on. Driving with this code is not advised.
Other trouble codes related to the P0746 code include P0745, P0747, P0748, and P0749.
Note: The definition of code P0746 might be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.
What are the Common Causes of the P0746 Code?
Trouble codes can have several possible triggers. As for the P0746 code, here are some of its most common causes:
- Pressure control solenoid failure
- Low transmission fluid level
- Wiring issue
- Dirty or clogged transmission filter
- Faulty transmission pump
- Faulty transmission valve body
- Clogged or restricted hydraulic passages
- Faulty PCM or TCM
What are the Common Symptoms of the P0746 Code?
Dealing with trouble codes is tricky because some codes can show symptoms, while others don’t. Some of the common symptoms of the P0746 code include the following:
- Illuminated malfunction indicator lamp or check engine light
- Increased fuel consumption
- Transmission not shifting properly
- Vehicle might enter limp mode
- Overheating transmission
How to Diagnose the P0746 Code
Different trouble codes can share the same possible symptoms, causes, and trouble areas. This is why DTC repair is a complicated process. You’ll need to thoroughly diagnose the problem before you can make any repairs. Proper troubleshooting can help you avoid further damage and heftier repair bills down the line. However, if you’re not familiar with the troubleshooting process for the P0746 code, you will need the expertise of a certified mechanic.
If you want to know more about how to diagnose and repair the P0746 code, there are many resources available today. Of all these sources, vehicle-specific repair manuals are the best. These manuals have detailed repair information and contain many helpful illustrations and guides to help you figure out the issue.
Here are some videos that can explain P0746 diagnosis and repair in more detail:
How to Fix the P0746 Code
Each trouble code has its own set of possible causes, each of which can have its own set of possible solutions. These solutions can also differ depending on the vehicle manufacturer. That’s why there’s no single cure-all fix for DTCs. The diagnostic and repair procedures to fix the P0746 in a Nissan might not be able to solve the same code on a Ford.
Proper troubleshooting is important so you can proceed with repairs. Unfortunately, not everyone has access to the proper tools and know-how needed to fix DTCs like the P0746. If you’re not familiar with DTC troubleshooting and repair, you can have a certified mechanic do the job for you instead.
The post P0746 Code: Pressure Control Solenoid “A” Performance / Stuck Off appeared first on In The Garage with CarParts.com.
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