The engine P1408 Code contains many important information what helps to fix the car engine. The automobile dictionary meaning of the code is also important thing but not so much important like the real meaning of the code. The automobile dictionary meaning of the code 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 8 for PCM Stack Overrun. About the engine P1408 code, it would perhaps be valuable to sensibly inspect the wire bind near the intake various bracket.