What do I do if my check engine light comes on?

What do I do if my check engine light comes on?

If the check engine light comes on, here are some tips on what you should do: Look for a serious problem that requires immediate attention. Check your dashboard gauges and lights for indications of low oil pressure or overheating. These conditions mean you should pull over and shut off the engine as soon as you can find a safe place to do so.

What would cause the Check Engine light to come on?

A loose gas cap can cause the check engine light to come on. A problem with a spark plug can cause the check engine light to come on.

How do you check the Check Engine light?

Put your key in the ignition and switch the vehicle to “on.” Do not start the vehicle. Once the lights on the dash come on, turn off all the vehicle’s accessories, like the radio. Then, press the “read” button on the scanner to access the check engine light code.

Why does the Check Engine light keep coming on?

or simply missing.

  • especially with higher mileage vehicles.
  • Fouled Spark Plugs or Spark Plug Wires: Over time you will eventually need new spark plugs or spark plug wires.

    Why does my Check Engine Light never come on?

    If the “Check engine” light does not come with the ignition ON, it’s possible that there is no power coming to the engine computer (e.g. due to a broken wire, faulty main relay, blown fuse, etc.) or that there is a problem with the engine computer itself.

    What are causes for check engine light to come on?

    Common Causes of a Check Engine Light Loose gas cap Cracked or otherwise faulty gas cap Worn spark plug or wire Faulty oxygen sensor Catalytic converter trouble Faulty mass airflow sensor

    Why no check engine light?

    The MIL or check engine light illuminates ONLY when there is an emissions failure. It is possible to have a code stored without a check engine light, but it is not possible to have a check engine light without a code. Emmission failures are any failure that increases the car’s emissions beyond the EPA’s allowable specs.