Do not ignore the general or automobile dictionary meaning of the car engine P2650 Code. You may face several problem in the car engine due to use false meaning of the car engine code. The automobile dictionary meaning of the car engine code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 6 for Vehicle Speed Control And Idle Control System. 5 for TP Sensor Learn Not Complete and 0 for Transmission Engaged At High Throttle Angle. The car engine code should be used and manually checking the car engine is also necessary to use.