Here are Nissan Pathfinder transmission problems, by model year. The most common Pathfinder transmission problems cost $3,900 to fix & occur at 109,000 miles. Regarding the worst model year 2005 Nissan Pathfinder transmission problems, "The 2005-2007 Pathfinder appears to have a widespread defect where coolant leaks into the transmission, causing transmission failure around 90,000 miles. Repair costs are typically upwards of $3,500." Click on a year below.

Worst Transmission Problems
coolant leaked into transmission 2005 Nissan Pathfinder
coolant leaked into transmission 2006 Nissan Pathfinder
radiator leaked coolant into transmission 2007 Nissan Pathfinder