OBD1 Codes - 172 and 176
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Postmaster
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From: Davis & Newcastle, CA
OBD1 Codes - 172 and 176
My truck threw the codes 172 and 176 tonight after I got back from the mountains. I lost my book with the codes explanations but according to a website they are as follows:
172: Oxygen sensor not switching - system is or was lean - Single, Right or Rear HO2S - Fuel control
176 - Oxygen sensor not switching - system is or was lean Left or Front HO2S - Fuel control
I had been at a normal altitude (where I live) for a while then shut off my truck for about 30 minutes at my house. Then took off from my place and the check engine showed up almost immediately. Has anyone had this happen before? Is this a bad O2 sensor? A confused O2 sensor from the changing altitudes? A combination of both? Thanks.
-Chris
172: Oxygen sensor not switching - system is or was lean - Single, Right or Rear HO2S - Fuel control
176 - Oxygen sensor not switching - system is or was lean Left or Front HO2S - Fuel control
I had been at a normal altitude (where I live) for a while then shut off my truck for about 30 minutes at my house. Then took off from my place and the check engine showed up almost immediately. Has anyone had this happen before? Is this a bad O2 sensor? A confused O2 sensor from the changing altitudes? A combination of both? Thanks.
-Chris
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Postmaster
Joined: Oct 2006
Posts: 4,816
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From: Davis & Newcastle, CA
First disconnect the negative battery cable to reset codes. Then if the codes return after driving, replace the O2 sensor.
-Chris
Elder User
Joined: Mar 2006
Posts: 588
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From: Bellville TX. Wof Houston
my experance with them is that they can go out for any reason at any time
"Or no ryme or reason"
I remember reading that it's recomded to replace like every 30000 miles
that seems to offten to me.
"Or no ryme or reason"
I remember reading that it's recomded to replace like every 30000 miles
that seems to offten to me.
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crane550
1987 - 1996 F150 & Larger F-Series Trucks
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Feb 9, 2016 04:13 PM
