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The P0745 code stands for “Pressure Control Solenoid “A” Malfunction.” Possible causes for the code include a bad pressure control solenoid, contaminants in the transmission fluid, a clogged transmission filter, and more.
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.
This is an educational video about how the electronic Pressure Control (PC) solenoid and pressure regulator valve work together to control fluid pressure in ...
The transmission pressure control solenoid controls the fluid pressure to the internal friction plate clutches or drum bands. A bad or failing transmission pressure control solenoid can cause slipping, which can result in the transmission overheating.
Troubleshoot Pressure Control Solenoid B for root problem. Inspect fluid levels and quality for solenoid function. Address electrical issues in solenoid circuit triggering the P0776 code.
The line pressure control solenoid is a normally high solenoid. With low current applied, the solenoid creates high pressure; in effect, the transmission has high line pressure. The line pressure control solenoid sends oil to the pressure regulator valve to control line pressure.
When diagnosing the P0746 trouble code in your vehicle, understanding its implications is essential for an effective resolution. This code specifically points to an issue with the electronic pressure control solenoid circuit, which plays a pivotal role in managing transmission pressure.
We’ll look at how they control pressure through the pressure control solenoid, and discuss some common issues and how to troubleshoot line pressure related DTCs. Let’s start by examining how the pressure control solenoid affects pressure on this transmission:
The EPC controls a pressure-regulating spool valve and spring that holds or releases fluid pressure, typically back to the transmission's sump. It's a variable force solenoid that changes at around 32 Hz (32 times per second). It has more precise control than a conventional hydraulic pressure control system.
Transmission power control solenoid -- PCS -- valves are duty cycle-controlled components that manage the pressure of transmission fluid. A PCS is required to prevent the transmission from seizing up from lack of fluid or bogging down as a result of too much fluid.