Hi guys, Im not on the board much, but need your input on code PO172 system too Rich, Bank 1. I have an 01 3.0 with 125k miles. Brand new MAF in spring of this year, new alternator last fall. Service Engine Soon came on today and stayed on. Car stalled twice last week when coming to a stop, but would fire right back up and drive normal. The service light was NOT on when that happened, but suddenly came on today. Do you think I may have a leak from the rubber hose of the MAF. Spark plugs have about 50k miles on them, and miles are all highway miles, 40 mile commute to work. Is it ok to drive it with the light on or should I fix the problem. Its my wifes car and she is paranoid of getting stuck in it.