It could mean that you have worn seals or gaskets.
.Is your transmission slipping or have you noticed that it is leaking? 07-11 Wrangler JK 2 & 4 Door;03-06 Wrangler TJ/LJ;03-12 Liberty;Models with 42RLE automatic transmission;Kit includes rubber and cork gaskets, sealing rings, oil seals, micro filter, springs and seal retainers;Factory style replacement part;California Residents: WARNING Omix-ADA 42RLE Transmission Rebuild Kit - 19001. Luckily, Omix-ADA has you covered with our 42RLE automatic transmission rebuild kit for 03-13 Jeep Liberty and 03-11 Jeep Wrangler.