2001 honda civic check engine light problems?

I have a 2001 honda civic with high miles. I have been having check engine light problems. A few months ago it was on for a while and then shut off and stayed off for a good month. I was driving on a main road the other day and the check engine light started flashing. I pulled over shut the car off and checked the oil which was a little low but definitely had enough oil. I turned the car back on and the flashing never happened again. 20 minutes later the check engine light pops on and is now staying on. What could this problem be? The car is not driving any different than it always has and when I bring it for a diagnostic at autozone it doesn't work because something in my cars computer system won't let it finish the diagnostic and it gets stuck. I need help to know what I need to fix!

It could be so many things.

I used to have a Civic, and I has told when the check engine light came on it was usually the oxygen sensor. But the wiring that feeds those lights could also be bad!

Maybe you should bring it to a Honda dealership, just to be sure. Civics are nice cars, and they're worth taking care of. (IMHO anyway.)

You need those codes the only way to tell why the light is on is by those codes. It could be So many things from an O2 sensor to ignition problems.

Many part stores will scan free, call until you find one and have scan ran on it

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