The car engine should be fixed properly. Do not use wrong meaning of the code for solving the car engine problem. The car engine P1184 Code plays important role for solving the car engine but you need to know the real meaning what is compulsory to use. The automobile dictionary of the code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 1 for MFG – Manufacturer Specific. 1 for Transmission. 8 for Exhaust Gas Recirculation System Valve 1 and 4 for Cruise Vehicle Speed/Set Speed Difference Too High. For solving the car engine, you first allow the real meaning of the code.