I have 2002 Dodge Stratus and I replaced battery yesterday as my old one died. Sometime this afternoon I noticed that the check engine light was on. After "key dance" method, I got P1684 error code. On quick search, the reason for P1684 was as follows:
P1684 indicates there has been a power outage from your battery in the past 50 starts
If this error code is correct, the then interval between the battery replacement must have reset the PCM model. However, the discussion forums have no mention of battery replacement as a probable cause, so my specific questions on this issues are:
Could the battery replacement be the only reason for P1684?
Will the engine check light automatically go out if everything is all right?
Is there a way I could reset the engine check light myself?