The automobile meaning of the engine U1114 Code is not helpful and do not use any other meanings for solving the car engine problem. The automobile or general meaning of the code is U for Network Code Problem is climate control system, lighting, airbags, etc. 1 for MFG – Manufacturer Specific. 1 for Transmission. 1 for Low Coolant Circuit and 4 for Cruise Vehicle Speed/Set Speed Difference Too High. The engine U1114 code seems a kind of network problem. The engine U1114 code had an sumptuous diagnostics process, including presentation engine trouble codes on the air conditioning display. Test drive is recommended.