why is my check engine light on but car drives fine

Your car might have a loose gas cap. If the light comes back on and your gas needle keeps dropping then im sure that you have a sensor problem.

The 7 Most Common Reasons Your Check Engine Light Turns On

Lets look at the seven most common reasons your check engine light turns on.

. Gas Cap A loose missing or damaged gas cap can cause the light to turn on because. Ad Chat with On-Call Mechanics. This is the most common reason why the check engine light.

It could be a problem in your cars electrical system or some issues in its emission system. The check engine light turns on and then off because the main computer might not be correctly registering the problems at all times. The ECU relies on the mass airflow sensor to work out how much fuel to add to the combustion chambers to correlate the amount of air coming into the engine.

Mass Airflow SensorMAF needs replacement. If the air filter is missing. Get Help w Chevy Maintenance Troubleshooting and Repair.

Then reconnect and drive for 10 miles so computer can relearn your engine again. Common Check Engine Light Explanations. An engine misfirea problem that almost always causes an increase in hydrocarbon emissions is one of the many reasons why the check engine light might.

Other issues may require more extensive repairs that may need to be completed at a repair. For filling the tank until it clicks your fine. Replacing these worn out parts will not only.

Though there are plenty of feasible and specific reasons for a check engine light to come on some issues are of course more common than. As we mentioned there are numerous reasons why a check engine light could come on. The check engine light will definitely come on if your car has spark plugs spark plug wires a distributor caprotor or ignition coils and the parts are failing and causing the.

You just have to disconnect the battery for 12 hour. When you have noticed the check engine light blinking on your dashboard it. Possible causes of the check engine light to come on are.

What Could Cause The Check Engine Light To Come On. Unfortunately your automobile may also turn off and you wont be able to get the car truck or utility vehicle started again until you replace the engine control module. You should have the key off when.

Misfiring the engine is another reason why the check engine light is flashing shaking the car. What Causes a Check Engine Light To Come On. It may run rough.

The gas pump has a. The cars system is programmed. In certain situations the Check Engine light may deactivate by itself once the issue is corrected.

Here S What It Will Cost If Your Car S Check Engine Light Stays On