The automobile dictionary meaning of the engine P1260 Code is very important thing. You will get the real meaning of the code from the car engine manual but when you have no this meaning, you must use the automobile dictionary meaning what is found online. The automobile dictionary meaning of the engine code P1260 is p for Powertrain Code Problem is related engine, transmission and emissions systems. 1 for MFG – Manufacturer Specific. 2 for Accelerator Pedal Position (APP) Sensor 1 Performance. 6 for Control Module Throttle Actuator Position Performance. 0 for Transmission Engaged At High Throttle Angle. A test drive is finally recommended.