You need to fix the car engine properly and confirm that the problem of the car engine is fixed without any error. The car engine P1449 Code helps you to fix the car engine and here, the problem is located in the powertrain. The powertrain problem can be fixed without removing any part from the car engine. You can use p for Powertrain Code Problem is related engine, transmission and emissions systems. 1 for MFG – Manufacturer Specific. 4 for Transmission. 4 for BBV Sensor Circuit Low Voltage and 9 for Kick-Down Switch Failed Short. When the correct meaning of the code is not found, you can use automobile dictionary meaning of the code.