Well, the light stayed off for a 45 mile trip. Sat for about an hour and a half and on re-start, light came on again. Drove it home, with no issues, ran fine, etc.....put a code reader on it and no codes. Started it again and no light.......LOL

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2012 Mercedes ML350 Bluetec 102K (hers)
2005 Corvette 55K (fun car)
2002 VW Jetta TDI 238K (mine)
1998 Volvo S70 T5 Turbo 211K (kids)
1994 Ford F150 4WD 246K (firewood hauler)
1983 Mercedes 300D 384K (diesel commuter)