Code P1745, line pressure open for too long?

105,678 MILES • 3.3L • V6 • 2WD • AUTOMATIC
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MALLYBOY
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This vehicle started this problem after a trip of 122km. I have replaced the valve body, the code returned. what exactly is the cause of this problem?
Feb 25, 2025 at 1:11 AM
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STRAILER
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This means the pressure control solenoid is stuck open or the line pressure sensor needs to be replaced.

DTC P1745 - Line Pressure Too High for Too Long

Here is how to replace the sensor. Check out the images (below). Please let us know what happens.
Feb 27, 2025 at 3:16 AM
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MALLYBOY
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So, i would change them both, also use spark plug and wires should help as well.

Here is how to replace the sensor. Check out the images (below). Please let us know what happens.
I have replaced the valve body together with line pressure solenoid (VFS) and line pressure sensor. The code still returned. i also used live data stream to check line pressure sensor and it reads 2.30 volts.
I have checked resistance and voltage across the circuit and all checks good.
What next?
Feb 27, 2025 at 4:27 AM
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STRAILER
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You can see the line pressure to the desired line pressure is low, this can be because of an internal failure or the pressure regulator control solenoid, but you replaced that already, so I would say there is something broken inside the transmission.
Feb 28, 2025 at 9:18 AM
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