This car engine P2740 Code is found from the car engine after test and meaning of the code lets you know about the car engine problem. Transmission temperatures that surpass a prearranged limit, set by the vehicle manufacturer, will reason a code to be kept in the PCM and a service engine soon lamp to be illumined. Service engine soon lamp lighting may also be attended by the distinctive smell of overheated transmission fluid. Smoke from the transmission area is also conceivable, as is broadcast slippage, or lack of transmission engagement. However, if you do not know the process of fixing the car engine, you should not try to solve the car engine.