P0603 How to repair the fault code and how to eliminate the fault code P0603?

The detailed description of fault code P0603 is as follows: System scope of fault: computer or auxiliary output circuit. Applicable models: all automobile manufacturers. Engine control module KAM error. I don't know the fault code P0603. 1.The position and function of PCM on the vehicle: A)PCM is generally installed behind the front bumper. The function of PCM is to control the fuel supply, gas distribution (electronic throttle), fuel injection and ignition timing, intake pressure adjustment and compensation control coefficient of the engine according to the temperature, load, knock and combustion conditions of the engine. 2. Types, structural principles and influences of PCM: A)PCM includes two parts: input and output. According to the current domestic emission regulations, the inputs should include engine speed, intake manifold pressure (or mass air flow), throttle position, coolant temperature, intake air temperature, oxygen sensor, battery voltage, etc. Outputs include fuel injector, ignition coil (or module), idle stepping motor, fuel pump relay, self-diagnosis interface, etc. Cause and effect: Not yet. Suggestions and solutions: Not yet.