The car engine U1045 Code explains the main problem of the car engine and if the meaning of the code is not found, it is impossible to identify the problem of the car engine. The automobile dictionary meaning of the code is different than the real meaning of the code. Do not use that common meaning for solving the car engine problem. If you use general meaning, you may welcome new car engine problem but you can learn some information form the general meaning of the code. The general meaning of the code is called automobile dictionary meaning and automobile dictionary meaning of the U1045 Code is U for Network Code Problem is climate control system, lighting, airbags, etc. 1 for MFG – Manufacturer Specific. 0 for Fuel And Air Metering. 4 for BBV Sensor Circuit Low Voltage and 5 for Park or Neutral Position (PNP) Switch Circuit Engine Torque Signal Circuit. The real meaning of the manufacturer is found from the engine manual. Chassis of the car engine has the problem and it is not very difficult to solve. The deactivation method of cylinders is realized by releasing a synchronizer pin that normally interlocks the cam follower and the rocker arms. The engine U1045 code resolutions the synchronizer pin is unconfined using hydraulic compression which is measured by a dedicated solenoid.