Transmission Fluid Pressure Sensor
WARNING: This page is about a different car, the 2003 Saturn Vue and 2002 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The Transmission Fluid Pressure (TFP) sensor is used to monitor line pressure and feedback to the TCM with an analog signal of 0-5 volts. The TFP sensor is fed with tier 2 feed fluid pressure, which nominally ranges from 70-850 psi (4.9-60.0 kg/cm2 ).