I have an 03 Accord with 90k. I recently had trouble  starting my car because something kept draining my battery . I'm on my second Interstate battery (it was recharged and voltage and alternator had good reading according to AutoZone). I had replaced the alternator with a rebuilt factory one 2 years ago. There are no service lights but my OBD scanner shows the codes : ABS : 61-1 (permanent) battery voltage failure and 11-10 Open or increased resistance in the left front airbag first  inflator. The 2 other things that I had done was the airbag recall fix at the Honda dealership ship last year and an aftermarket sensor put in 2 years ago by  a car alarm shop. I suspect it could be the latter that is draining the battery. Do the codes indicate something else as root cause or are all these separate issues?