The engine P1407 Code is related with the car engine. The car engine problem can be small but dangerous. A spark plug makes the car move and its function is to kindle the trodden fuel in the engine. When you face the car engine problem, you must take the car for a test to know the cause of the car engine problem. The engine can be fixed by the real meaning and if necessary, then you can use the automobile dictionary meaning and that is p for Powertrain Code Problem is related engine, transmission and emissions systems. 1 for MFG – Manufacturer Specific. 4 for Transmission. 0 for IC Circuit High Voltage and 7 for Cruise Inhibit Control Circuit.