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View Full Version : What does ol-failed means on the fuel system status ????


400ss
January 10th, 2013, 07:14 AM
IM WORKING ON A 1993 Ford LIGHTNING whit a 2003 5.3L 4L60E engine/transmission, completely stock, everything is ok, only one problem, whit the MAF conected, the Pts hangs betwen 9-11% and he spark will go up and down up and down, and the FUEL SYSTEM STATUS SHOWS : OL-FAILED
joecar
January 10th, 2013, 09:25 AM
It means the NBO2 is not working.
400ss
January 13th, 2013, 07:45 PM
It means the NBO2 is not working.
checked my o2s, the drivers side was disconeced, i dont know why. i conect it again and its working perfectly. thank you a lot