Without meaning of the car engine P2746 Code, it is not possible to solve the car engine fast. Meaning of the code should be taken from the car manufacturer and use it for solving the car engine. You can also apply the general meaning of the code and it is p for Powertrain Code Problem is related engine, transmission and emissions systems. 2 is MFG – Manufacturer Specific. 7 for Auxiliary Emission Controls. 4 for BBV Sensor Circuit Low Voltage and 6 for Cruise Control System – Vehicle Accel Too High. Do not fix the car engine by this general meaning when you have found the real meaning of the code.