The real meaning of the car engine P3450 Code is the best explanation of the car engine problem. The powertrain problem of the car engine is general problem and this problem is located in the car engine what you need to fix fast. The automobile dictionary meaning may also use for solving the car engine problem. The general meaning of the car engine code is p is Powertrain Code Problem is related engine, transmission and emissions systems. 3 is SAE – Generic. 4 is Transmission. 5 for TP Sensor Learn Not Complete and 0 for Transmission Engaged At High Throttle Angle.