They command how much fuel to spray and add to the fuel injector circuit. In addition to the engine control module, the fuel injectors are also involved. Since the engine control module is what determines the injector circuit malfunction, this plays a huge part in the diagnosis so that you can answer the question “what is injector circuit malfunction”? Some of these sensors within the electronic control module are the mass airflow sensor, oxygen sensor, air to fuel sensor, and determining the crankshaft and camshaft to track your vehicle’s RPM and engine load by monitoring the speed. Within the air to fuel ratio, the electronic control module uses sensors to regulate how much oxygen to fuel ratio is detected within your car’s exhaust and determine whether the reading is too lean or too rich. The ECM is in charge of regulating the four main parts of your vehicle’s operating systems, which include the air to fuel ratio, idle speed, valve timing, and ignition timing. After each reading analyzing your car, the engine actuators are then adjusted to determine what needs to be fixed in your vehicle. The engine control module gains data from various sensors within your car, and uses multidimensional maps. The engine control module is basically the computer of your car that determines the optimal engine performance.
The fuel injector circuit is what is in control of the fuel injectors and determines how much fuel should be added, and when to add the fuel. P0200 means that the engine control module has detected a malfunction in the fuel injector circuit.
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