Posts Tagged: Why does the check engine light come on?

What does a check engine light mean?

A check engine light means the computer has found a fault in a major system All modern vehicles have at least one computer to run the engine and transmission. Those computers take in data from sensors like the intake air temperature sensor, oxygen sensor(s), engine coolant temperature sensor, manifold absolute pressure sensor, and the mass airflow sensor. If the data is outside of normal specifications, the computer will set an internal trouble code and turn on the check engine light. Here’s how to find out what a check engine light … Read More