On automatic transmissions the accumulator cover can leak due to failed o-rings. Replacing the o-rings and cover will address this issue.
Car Problem Reports
Honda Passport Failed O-rings Can Cause Accumulator Cover to Leak on Automatic Transmissions
Honda Passport Problem
Drive Train Affected: 4WD
Average Mileage: 122,950 mi (40,000 mi - 150,000 mi)
Visitor, 2000 Honda Passport, 4WD, 40,000 mi
Had the seal replaced.
Visitor, 2002 Honda Passport, 4WD, 130,000 mi
Transmission fluid leaking from right side of transmission. Accumulator cover to be replaced. Leaks much worse when car is moving.
Visitor, 2002 Honda Passport, 4WD, 147,600 mi
Started leaking and accumulator cover was replaced, I then drove it out of town a week later and it started leaking again so much so that I had to leave my car 125 miles from home. Any help will be helpful. I don't know what to do since it is a closed transmission, being a female with not much money should I try to trade it in?
Visitor, 2002 Honda Passport, 4WD, 140,000 mi
trans fluid leaks from accumulator