Why is the Check Engine Light On?

Has the CHECK ENGINE light turned on in your Nissan? We understand it can be concerning to see the check engine light appear on the dashboard of your Nissan. A variety of instances can cause the CHECK ENGINE light to appear. 

The Factory Certified Technicians at Nissan of The Main Line can help diagnose and repair all instances that would activate the Check Engine Light.


It's never a fun experience to see the CHECK ENGINE light illuminate. Not only is it a sign that something is wrong, but it's not easy to tell what the problem could be. The Service Technicians at Nissan of The Main Line will quickly diagnose and communicate the cause. Here are some important things to know...

Check Engine Light has Many Meanings

Basically, the CHECK ENGINE light being on means the engine needs to be checked. The light functions as a "Catch All" for many alerts and warnings.

A Steady Light is Less Urgent

If the light comes on and does not blink, your Nissan is more than likely not in any immediate harm. This means you can keep driving, but you should schedule a service appointment as soon as it is convenient to do so. 

Check the Gas Cap

One of the most common occurrences for the CHECK ENGINE light to appear is a loose gas cap. Remove and re-apply the cap, tighten it, and restart your engine to see if this is why the light has appeared. 

Blinking Check Engine Light Means There is an Emergency

If the light is blinking, it means there is a more serious problem; generally with the engine. Call Nissan of the Main Line Service at (610)-695-2900. 

Get the Code Diagnosed

Blinking or not, you will want to get your Nissan to the Service Department at Nissan of The Main Line to get it checked out. Our factory trained & tested technicians have Nissan-specific diagnostic equipment that will communicate with your Nissan's computer system, read the code, and tell the technician what is wrong. Then, you and your technicians can decide how to best repair the vehicle.

Regardless of the reason, our expert technicians can diagnose your check engine light, make any repairs or replace parts and have you back on the road in no time. If you feel you're ready to schedule an appointment, please do so here or call us at (610)-695-2900.