Why is my check engine light illuminating?

When the check engine light turns on, it doesn't automatically mean that you're on the verge of an automotive disaster. However, you'll still want to be proactive about getting to the shop for diagnostics. Otherwise, you could find yourself with very expensive repairs that could've been nipped in the bud. Here's a look at six common reasons that a check engine light turns on.

Faulty Mass Air Flow Sensor

Your mass air flow sensor monitors incoming air and determines how much fuel to inject with it. If this is what's triggering your check engine light, you'll be fortunate in that it shouldn't cost too much to address.

Failing Catalytic Converter

A failing cat, on the other hand, can cost you a decent chunk of change. Still, it'll need to be taken care of because of the catalytic converter's important task, which is to turn carbon monoxide into an emission that isn't as harmful to the environment.

Bad Oxygen Sensor

This keeps tabs on the amount of unburned oxygen in the exhaust system. When problems arise with an oxygen sensor, you could consequently see drop in gas mileage, as well as issues with your catalytic converter.

Faulty Ignition Coil

Ignition coils play a crucial role in creating the spark needed for engines to come roaring to life on all cylinders. They are prone to failure due to weather extremes.

Poorly-Fitting Gas Cap

It might seem strange, but when a gas cap isn't properly sealed, the check engine light could be triggered, while gas evaporates before you get the opportunity to use it.

Bad Battery or Charging System

A failing battery can lead to low voltage at the computer, which can then trigger the check engine light.

If you're in need of auto repair, be sure to visit a reputable mechanic. For check engine light diagnostics & repair in Lost Creek, Dripping Springs, and Austin, TX, the experts to contact are at Austin Auto Repair at (512) 865-6217. Feel free to give Austin Auto Repair a call today to schedule an appointment for any of your repair or maintenance needs!

Austin Auto Repair Blog

Written and Published By MORBiZ