The automobile dictionary meaning of the engine P0608 Code is not right thing for solving the car engine’s problem. The automobile dictionary meaning of the code may not match with your car’s engine problem. The automobile dictionary meaning of the code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 0 for SAE – Generic. 6 for Vehicle Speed Control And Idle Control System. 0 for IC Circuit High Voltage and 8 for PCM Stack Overrun. Find the meaning of the code according to the manufacturer’s and car model number. Make sure that you have found the right meaning of the code.