I know this has probably been discussed before. My van went into limp mode the other day. The only code was PO1745, nothing else pending. The information I've gotten is that this code "Line pressure too high for too long" is indicative of a malfunction in the variable line force solenoid which is part of the solenoid pack. I replaced this part. I was also informed that another cause could be a faulty connection between the VLF solenoid and the PCM, so I checked for continuity, and it is there, from pin to pin. There is no apparent damage to the wiring harness, and I've opened most of it. Is there some other possible cause I'm overlooking? Obviously the transmission is still in limp mode, so it's hard to know if I've "fixed" it or not. I'm alarmed to learn that this code cannot be cleared except by resetting parameters in the PCM. I'm guessing this means going to a dealer. I'm wondering if there is any scan tool that is not outrageously expensive that would be capable of doing this, or am I just dreaming?