A pressure request and its reported result need comparison under a defined operating condition. A difference can guide diagnosis but does not alone identify a pump, sensor, solenoid or TCU.
Understand the data source
Ask whether the actual value is measured directly or represented differently in the available tool. Preserve units, temperature, gear and load. Include recent fluid or mechatronic work.
The workshop should follow the correct hydraulic and electrical test process. Do not command unfamiliar output tests or adjust pressures experimentally. The repair recommendation should explain which evidence separates a control issue from a mechanical or measurement problem and how the same condition will be checked after the work.
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