The automobile meaning of the engine P0074 Code is not necessary thing but some people are interested to know about the automobile meaning of the code. The automobile meaning of the engine P0074 Code is P for Powertrain Code Problem is related engine, transmission and emissions systems. 0 for SAE – Generic. 0 for Fuel And Air Metering. 7 for Vehicle Speed Output Circuit and 4 for Cruise Vehicle Speed/Set Speed Difference Too High. The lifters can be distorted by disengaging an inner locking pin. The locking pin is severed using solenoids to modify oil compression fed into the lifter. Now you may test the car.