check engine light stuck on for years

[dnicedog]

my check engine light has been on since about 50k. Everytime I get it turned off, it turns back on in less then 10 miles. There is nothing wrong with the car. I have had everything checked and fix. Now bc of new laws it will not pass emissions. Any suggestions on what to do?

[nicoleos]

Something simple, but did you disconnect the negative battery for a few minutes and then reconnect it?

[boschmann]

What code is it setting?