Once years ago; may have a had a bad ground still after that one; then once right before I sold it about 10 years ago, I replaced it again, and made sure it was grounded properly; then when I bought it back several months ago, it was on again, I replaced it with a NOS sensor, made dang sure ground was good, even ran a jumper ground to the battery ground located close by. Each time the light went out for a good long while, but came back on. I would say this last time, the light was out for at least a month........can't keep throwing sensors at it for $250 a pop........any ideas as to what could be causing premature failure, or just really unlucky? Codes always indicate left front sensor.