I have 97 Dodge Avenger with the check engine light on. I had it hooked up to a code reader and it read an oxygen sensor error. I replaced both sensors with new OE sensors and disconnected the battery for 15 min. The light went off and came back on after 2 start ups and has remained on. It is still giving an oxygen sensor error code. Anyone know what the problem is?

 

Have you added anything that isn't stock or OEM? Like intake, headers, etc...
those things can cause problems like that.

 

No, everything is stock.

 

MINE DID THAT ONCE AND IT WAS BECAUSE THE GAS CAP WASN'T SCREWED ON TIGHT ENOUGH.

 

I had the same error, plus a few others when I ODBII'ed it. Went to Dodge Dealership, recet ECU, cleared that right up.