DTC P0795 Pressure Control Solenoid Valve C (TCC And Shift Pressure): Description

WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

The pressure control solenoid valve C is normally low, 3-port linear pressure control solenoid.
The pressure control solenoid valve C is activated to control the apply and release of the 2nd brake and 1st and reverse brake, and torque converter clutch.
Lock-up operation, however, is prohibited when A/T fluid temperature is too low.
When the accelerator pedal is depressed (less than 1/8) in lock-up condition, the engine speed should not change abruptly. If there is a big jump in engine speed, there is no lock-up.

Fig 1: Fluid Pressure To Current (Amperage) Relationship Graph

Courtesy of NISSAN MOTOR CO., U.S.A.