So the problem is you have a leak someplace, not the codes anymore, right? Probably where the tailshaft mounts to the transmission if it leaked before. Mine leaked from the dipstick tube not being fully pressed in, but that is the other side of the tranny and more likely to be spotted on that side.
97 Mark VIII LSC/Silver/Gray leather
97 Cougar 4.6 Sport/White Opalescent Tricoat Metallic /Gray leather down but not out?
89 Cougar LS 3.8/Oxford White/Gray velour/HG need replaced AGAIN
00 Grand Marquis LS/Vibrant White/Gray velour
63 Falcon 302/black and rust/shed isn't moving
82 F-150/Oxford White/dumb VV carb doesn't pass emissions