If you know the general meaning of the car engine P2266 Code, you can use it when the right meaning of the car engine code is not available. The general meaning of the code is found online and it is also important thing. The automobile dictionary meaning of the code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 2 for Accelerator Pedal Position (APP) Sensor 1 Performance. 6 for Control Module Throttle Actuator Position Performance and 6 for Cruise Control System – Vehicle Accel Too High. Read the manual of the car engine to know the right meaning of the code.