The automobile meaning of the U1119 Code is available online and it is not very helpful for solving the car engine problem. The 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 9 for Kick-Down Switch Failed Short. If you have expertise and you have all necessary tools, you can fix the car engine problem. Do not follow wrong meaning of the code, you cannot fix the car engine problem. You should hand over the car to professional if you have no idea how to fix the car engine.