2006 Chrysler 300C 5.7L Stuck in First Gear with P0717 and P0752 Codes - How to Fix at Home
I own a 2006 Chrysler 300C with a 5.7L V8 engine. The car shifts smoothly into reverse and first gear, reaching up to 30-35 mph at around 2500 RPM. However, it will not shift into any higher gears. Two diagnostic trouble codes have appeared: P0717 (Turbine/Input Shaft Speed Sensor Circuit No Signal) and P0752 (Shift Solenoid A Stuck On). I've already checked the transmission fluid level and all connections — they are fine. Does anyone else experience this issue? What steps should I take to diagnose and fix it myself? I'm looking for a clear, step-by-step guide to resolve this without going to a mechanic immediately.
P0717 Possible Causes: - (T72) Sensor Supply Voltage Circuit Open - (T70) Input Speed Sensor 1 (N2) Signal Circuit Open - (T70) Speed Sensor 1 (N2) Signal Circuit Short to Another Circuit - (T13) Sensor Ground Circuit Open - (T13) Sensor Ground Circuit Short to Another Circuit - (T70) Speed Sensor 1 (N2) Signal Circuit Short to Ground - (T13) Sensor Ground Circuit Short to Ground Speed Sensor 1 (N2) Transmission Control Module P0752 Possible Causes: - (T60) 1-2/4-5 Solenoid Control Circuit Open - (T60) 1-2/4-5 Solenoid Control Circuit Short to Ground - (T60) 1-2/4-5 Solenoid Control Circuit Short to Another Circuit 1-2/4-5 Solenoid Transmission Control Module Recommended first step: Inspect the transmission harness and ensure the transmission connector passes through the transmission is secure and undamaged. Look for frayed wires, corrosion, or loose connections in the sensor circuits.