The diagnosis U1107 Code helps to fix the car engine problem and if you do not know the real meaning of the code, you cannot solve the car engine problem. Do not drive with engine problem and no matter the engine problem is minor. The automobile 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. 0 for IC Circuit High Voltage and 7 for Cruise Inhibit Control Circuit. Do not follow this general meaning of the code for fixing the car engine problem.