View Full Version : code 172

05-04-2007, 03:24 PM
pulled code 172 from car today
heated exhaust gas oxygen(HEGO) senseor voltage signal indicates lean (bank # 1)

is this a bad O2 sensor?

Ira R.
05-04-2007, 04:19 PM
It is the first place to look, yes. Actually, the second. The first is to make sure the current sensor is plugged in all the way. That was my problem :p


05-04-2007, 06:39 PM
thanks Ira for the reply, i have another issue im trying to clear up, it could also be triggering the code also, so i am gonna wait before to clear this other issue and see if it goes away...if not i have a spare 02 laying around.:)