On Board Diagnosis Logic
WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostic trouble code "SFT SOL A/CIRC" with CONSULT-II or PO750 without CONSULT-II is detected when TCM detects an improper voltage drop when it tries to operate the solenoid valve.