Category: Air & Fuel Mixture Control

Here we will discuss codes related to the air-fuel mixture control systems. The ECM (Engine Control Module) uses sensors such as the mass airflow, manifold absolute pressure sensor, oxygen sensors, and A/F sensors along with many more in order to monitor and adjust how the engine is running. It then uses this information to precisely inject the proper amount of fuel and air and then ignite this mixture at the proper time in order to maximize performance and increase fuel mileage to its peak. In newer cars, this is perfected even further by adding variable camshaft timing, multiple camshaft and crankshaft position sensors, and direct fuel injection.

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