If your “Check Engine” light comes on, or if something just doesn’t feel or sound right, drive into our nearest auto repair shop.
Today vehicles contain more electronics and computing power than the space module that put the first men on the moon.
Nearly every system on your vehicle, from steering and brakes, to fuel injectors and air conditioning, is controlled by a computer. This computer has a series of sensors, through which it can determine if there is a problem with any of these systems and notify the driver via dashboard warning lights.
Diagnostic tests can reveal problems within a car’s engine, transmission, exhaust system, brakes, and other major components, as well as performance issues with the fuel injector, air flow and coolant, ignition coils, and throttle.
However, a common misconception about car diagnostic tests is that technicians can use code-reading tools to determine the exact problem that triggered the check engine light. In reality, the code tells technicians which engine or component parameters are out of range, but it does not detail the cause of the problems. That’s where the good old human brain comes in handy, as the technician uses experience and expertise to diagnose the underlying problem.
Any number of things can go wrong with your vehicle’s systems, and sensors within those systems will notify the CPU when there is a problem. Some sensors tell the CPU when the mixture of air and gasoline are not right. Other sensors tell the CPU when the engine timing is off, when the vehicle’s emissions are out of whack, or when the ABS (anti-lock braking system) is not working properly. Some of these problems show up as a dashboard warning light. Others will generate a “code,” or notification to the car’s on-board computer that something is wrong.