Know about the engine before taking step for solving the car engine. The engine P0667 Code helps to solve the car engine but the real meaning of the code is used only. The engine code’s automobile dictionary meaning is not perfect and it 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. 6 for Control Module Throttle Actuator Position Performance and 7 for Cruise Inhibit Control Circuit. You need to use the right meaning only. Due to the wrong meaning, you may get serious problem in the car engine.