No Torque Converter Clutch Lock-Up Occurs
WARNING: This page is about a different car, the 2002 Nissan Sentra, 2002 Infiniti G20, 2001 Nissan Sentra, and 2001 Infiniti G20. However, it is still accessible from the selected car via links, so may be relevant.
Possible cause: TP sensor or PNP switch misadjusted, incorrect engine speed or VSS signals, incorrect line pressure, or damaged fluid temperature sensor, TCC solenoid, valve body assembly or torque converter.