If you have a check engine light on in your vehicle you can pick up a scanner to read the error. It plugs into a port on your vehicle and can tell you what is wrong.
Even if you can't do the repairs yourself you can get an idea as to the problem. I think you can buy one for about $50.
#themoreyouknow 
100% it also let's you "clear" the codes as well (turn off check engine light) sometimes it is just a one off thing that doesn't come back (unfortunately this probably only happens less than 10% of the time)
This happened to me the other day. I went to an Advance Auto Parts, and asked the cashier to use one of these on my car. He pulled one out from behind the counter and plugged it into my car.
This is an option if one doesn’t want to buy the scanner themself.
The free ones at almost any auto parts store are better than the cheap scanner I would buy. I also have a neighbor and others with high end mechanic diagnostic ones also. I generally try to just go to AutoZone or someplace to not annoy my buddies. If really big issue and need help then I reach out to use the higher end ones.
Sounds like that is the way to go.
Yeah, that is great.
More auto parts stores will either you one too
Nice. That is a great option as well.
I have a ODB scanner tool & I've fixed several issues in several vehicles.
Most of them were from sensors that were throwing an error. Buy the replacement sensor for $50 & then go looking for where it is in the car. YouTube is awesome for getting tips & information.
It's saved me thousands.
