Why is does my check engine light come on and then go off?

Why is does my check engine light come on and then go off?



Your check engine light continuously runs tests and monitors the systems in your vehicle. This is to make sure they are operating properly. If one of those components stops working as it is designed to then it will cause an error. This causes your check engine light will come on. If your check engine light, then goes off it could be that it re-ran the test and the component passed this time. Many times, we see this when a component is starting to fail. We can scan and diagnose your vehicle even when the light is off. This is due to the information being stored in your vehicle’s computer even when the light is off. Give us a call and let us take care of you.


Happy Adventures,


Heather

Our specials can be found here - Specials - J & H Automotive, Inc

Ready to make an appointment … Appointments - J & H Automotive, Inc

Want to know more … About Us - J & H Automotive, Inc

Would you like to join our merry band of misfits? Careers - J & H Automotive, Inc

By jhautoinc February 3, 2026
You want this to work properly.
By jhautoinc January 30, 2026
These are vital to keep you safe on the road.
By jhautoinc January 27, 2026
Your engine will thank you.
By jhautoinc January 23, 2026
They help keep your engine cool.
By jhautoinc January 20, 2026
They need maintenance to keep them running.
By jhautoinc January 17, 2026
It's better for your engine. 
By jhautoinc January 13, 2026
They are more important than you know.
By jhautoinc January 10, 2026
A spark plug gap can cause a misfire.
By Bobby Poist January 7, 2026
They're important to keep you safe on the road.
By jhautoinc January 3, 2026
It's more often than you think.