Why is the Check Engine Light On?

Why is the Check Engine Light On?Once your check engine light comes on, time becomes critical... as in, get to the repair shop now! Your auto is telling you there is a problem that needs to be fixed now, or you can wait and likely spend more money to fix a much bigger issue. When your car's check engine light comes on, contact a professional car repair shop to have the problem diagnosed using the latest computer diagnostic equipment that will quickly identify the fault at hand. Here are five common reasons the check engine light may illuminate.

Failed Catalytic Converter

The catalytic converter helps reduce harmful emissions by converting carbon monoxide and other hazardous fumes into less harmful emissions. Replacing a catalytic converter is pretty pricey, but they generally don't fail unless something else broke first, such as much less expensive spark plugs or an airflow sensor. This is why it is important to get your vehicle to a professional mechanic as soon as the check engine light comes on so that you can get the initial problem fixed for a couple hundred dollars before having to spend thousands on an avoidable issue.

Malfunctioning MAF Sensor

The mass air flow (MAF) sensor monitors incoming air and calculates how much fuel to inject with it to ensure that the engine continues to run smooth. If the vehicle's sensor system determines the sensor is malfunctioning the check engine light will come on. This is usually an inexpensive fix that is important to take care of because is the MAF sensor goes bad, it can harm your fuel economy by 10 to 25 percent.

Faulty Charging System

New vehicle have charging systems that are quite sophisticated compared to the technology used in models of yesteryear. A car's sensors have made batteries and their systems more likely to turn on the check engine light due to a sensitivity to high temps and dry weather.

Loose Gas Cap

When your check engine light comes one of the best things you can hope for is loose or broken gas cap. Gas will evaporate through the opening of a loose or ill-fitting fuel cap causing the light to glow. To avoid an unnecessary test for a fix that costs the turn of your wrist, be sure your gas cap is tight and secure each time you fill up.

Bad Ignition Coil

A failed ignition coil means that your vehicle won't be able to produce spark needed to make your internal combustion engine fire up. The coil increases the voltage produced by the 12 volt battery and can go bad for simple reasons, including operating under extreme temperatures. This part is subject to harsh conditions on a regular basis and will wear out over time.

Don't put off having proper diagnostics ran when the light comes on, the issue will get worse! For expert check engine light repair in Austin, TX, reach out to Precision Tune Auto Care. At our full service auto repair shop we use the latest technology to quickly pinpoint troubles and get them repaired fast! Anytime you need quality auto repair in Austin give us a call at (512) 580-4826 to schedule an appointment.

Precision Tune Auto Care Blog

Written and Published By MORBiZ

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