Is this a check engine code? If so, it should be 3 digits. So the number could be P0172.
I would need the year, make and model, along with the engine size (4 or 6 cylinder) to tell you what this code is.
You would have to get the correct code from the technician. If he is not sure what he's doing, it may be best to take your vehicle to a certified shop or dealership that understands how to use a scan tool.
〉 Answered on Jul 25th, 2007 by Lori Johnson, Owner and Instructor at Ladies Start Your Engines