According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2001 Honda Passport has 10 documented known issues, with 4 rated critical. The most serious are Automatic Transmission Torque Converter Clutch Shudder and 2nd-Gear Failure ($1,800-$3,800 repair), Frame Rust and Rear Suspension Mount Corrosion ($500-$4,000 repair), Timing Belt and Water Pump Neglect Leading to 3.2L V6 Engine Damage ($700-$3,000 repair) and Takata Front Airbag Inflator Rupture and Unsafe Deployment ($0-$300 repair). Across all issues with published estimates, repair costs range from $100 to $4,000. DIY maintenance guides at au7o.io.