Nissan Altima locks are going crazy

The power locks in my 2001 Nissan Altima are locking and unlocking on their own. The locks will respond to the remote and to the console switches, but then go back to their own cycle of locking and unlocking. This started around the time I tried (unsuccessfully) to program a second remote, so that my husband and I could each have one. Does anyone know what I did wrong, or how I can get back to a car that stays locked when I park it on the street in Los Angeles?

Do they do this everywhere, or just in one general location?

It happens everywhere.