The meaning of the car engine P1916 Code lets you know about the car engine problem. The powertrain is here faulty and it needs to fix as soon as possible. The real meaning of the code is important thing and the automobile dictionary meaning of the code is not similarly important. The automobile dictionary meaning of the code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 1 for MFG – Manufacturer Specific. 9 for Fuel And Air Metering (Injector Circuit Malfunctions Only). 1 for Low Coolant Circuit and 6 for Cruise Control System – Vehicle Accel Too High.