What To Do If Your Check Engine Light Comes On

Seeing a check engine light come in can be troublesome. It can show a variety of problems. Sometimes, it's not the engine. So read on to see what the light could mean and what it can be done about it.

Common causes of a check engine light

  • Gas cap is loose- You may have forgotten to tighten it back on!
  • Bad Oxygen Sensor- You'll need to replace this.
  • Bad spark plugs- Time to replace these.
  • Bad Catalytic Converter- Inspect this or have a mechanic inspect it to see if you need a new one.
  • Faulty spark plug wires- You may need to replace these.
  • Mass airflow sensor is bad- you'll need to replace this.

When to be concerned about check engine light coming on

It only comes on randomly or flickers

Here, you'll want to closely monitor this. Let's say it comes on while driving in the city, but turns off when you are driving on the freeway. You'll want to pay attention if your vehicle drive or runs differently in these conditions. Even if there is nothing wrong with the performance, you'll want to get the vehicle inspected as soon as you can.

The light stays on

If the check engine light comes on and stays on every time you start the engine, there may be issues in the emissions control system if there are no performance issues. However, if there are issues and the light is on, either way, get the vehicle inspected as soon as possible.

The light comes on and flickers in a consistent pattern

This is a sign of a more serious problem and you should not drive your car anywhere but the auto shop. Doing so will probably destroy other parts of the engine and some parts of the vehicle. Do not ignore this.

As you see, it's important to pay attention when your check engine light comes on. It can range from small issues to serious problems. If you need to check engine light repair, we invite you to bring your vehicle to Cornerstone Automotive - Crum Lynne today!