Common Triggers of the Check Engine Light

Common Triggers of the Check Engine LightThere are many ways to tell if your vehicle is suffering from operational troubles, such as sounds, smells or vibrations. But many problems are so minute when they begin, they offer no physical or tangible clue of their existence other than minor performance drops. However, these problems will grow worse if they are left untreated. Thankfully, our cars don't let them go undetected. As soon as the check engine light comes on be sure to visit you local auto shop for proper diagnostics.

Malfunctioning Catalytic Converter

The catalytic converter converts hazardous exhaust fumes into less harmful emissions before they are emitted out of the tailpipe. This part uses rare metals and is expensive to replace should it fail, but it won't break unless another, smaller problem occurs first, which would allow for excess fuel to pass through and damage it. The initial problem would have illuminated the check engine light long before the failure of the catalytic converter, but having failed to get the issue diagnosed, it grew worse, resulting in a need for an expensive repair.

Exhaust Leak

An exhaust leak will alter readings being taken by the Oxygen Sensor, which can cause your vehicle to run rich and create a major increase in hazardous emissions fumes. If the sensor does not obtain proper readings of the amount of oxygen in the exhaust the check engine light will be come on.

Failed MAF Sensor

The MAF (Mass Air Flow) sensor measures the air that flows into the air intake and calculates how much of it needs to be mixed with the gasoline in order to create a proper running motor. If the MAF fails these calculations will be thrown off which results in the engine running rich, meaning it is using too much fuel. This issue not only decreases MPGs but it can cause numerous other problems for your vehicle's engine as well.

Broken Gas Cap

The best news that you get get in regard to a check engine light diagnosis is that it was caused by a loose or broken gas cap. A loose, cracked or otherwise damaged gas cap can allow fuel vapors to evaporate out of the filler hose, triggering the check engine light!

When the light comes on head to the auto repair shop right away to prevent the problem from growing worse. If you need check engine light diagnostics in Austin bring your car to Austin Auto Repair. We service all makes and models. To schedule professional auto repair in Austin give us a call at (512) 865-6217 today.

Austin Auto Repair Blog

Written and Published By MORBiZ

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