A somewhat common issue is related to the issue of often a pressure issue. If the pressure readings do not increase significantly as the engine speed is raised above 2000 rpm, the pressure control solenoid is usually at fault. The pressure control solenoid is usually accompanied by DTCs P0867(C8) and P0868(C9). If the readings vary with engine speed (above 2000 rpm), the fault is often a sticking main regulator valve. This valve is located in the transmission pump assembly.
So as mentioned, there could be diagnostic trouble codes that could point us in the right direction. If you haven't had the computer scanned, that is where I would recommend starting.
Here is a link showing how to scan the entire can-bus:
https://www.2carpros.com/articles/can-scan-controller-area-network-easy
If you have a live data scan tool, you could check to see if the line pressure is increasing via the tool.
Let me know your thoughts and questions. Also, if you have retrieved codes already, let me know what they are.
Take care,
Joe
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Monday, November 11th, 2024 AT 5:44 PM
