2001 Hyundai Santa Fe V6 Automatic Transmission Stuck in Park: P1529 Code Fix and Sensor Diagnosis

Model: Hyundai Fault Code: P2177 Posted: 2011-06-24 14:13

My 2001 Hyundai Santa Fe with a V6 engine and automatic transmission is experiencing a serious issue after driving for some time. The transmission will not shift into park (P) or reverse (R), even though the engine is running. A scan using an Autoxray 40-000 scanner reveals only P1529 code, with no other diagnostic trouble codes detected. The vehicle operates normally when cold, but fails to engage gears once warmed up. I'm wondering whether this points to a faulty input or output transmission sensor. Any insights on how to diagnose and fix the P1529 issue in this model? Is it likely a sensor failure or a more complex transmission problem?