The engine of the car is very necessary thing and it should keep unfixed. The car engine can be solved very the car engineer who knows the process of solving the car engine. By the checking the car engine, the engine P1174 Code ha come on the engine code reader and the car engine code is important thing for solving the car engine. The automobile dictionary meaning of the car engine code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 1 for MFG – Manufacturer Specific. 1 for Transmission. 7 for Vehicle Speed Output Circuit and 4 for Cruise Vehicle Speed/Set Speed Difference Too High.