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P0172 Diagnostic Trouble Code Discussion for May 2007

Fuel System Rich (Bank 1)


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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
1998 Ford F-150 Lariat 5.4L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 1FTRX07L3W
P0172: bank one too rich. got one here for all you ford guys. tryed to smog this thing and it failed on hc and co. while testing found that when you hold it at about 2200 rpm the ltft goes to -25 on both banks and short term goes jumping around the -10 area. the injector pulse is at 3....
May 01, 2007
1998 Ford F-150 Lariat 5.4L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 1FTRX07L3W
P0172: bank one too rich. got one here for all you ford guys. tryed to smog this thing and it failed on hc and co. while testing found that when you hold it at about 2200 rpm the ltft goes to -25 on both banks and short term goes jumping around the -10 area. the injector pulse is at 3....
May 02, 2007
1998 Chevrolet Venture 3.4L MIL Lamp on VIN: 1GNDX06E3W
P0172: Fuel Trim System Rich (Bank 1). ... -14% to -16% LT fuel trim. It runs with a slight flutter at idle, after a while it sets a P0172 code. When you command open loop with the scan tool, the oxygen sensor sits at 800mv. In closed loop the fuel trim compensates. Ive tried several things; discon...
May 03, 2007
2000 Nissan Quest GLE 3.3L MIL Lamp on VIN: 4N2XN11TXY
P0172: Fuel Trim Rich (Bank 1). I'm banging my head against the wall on this one, thanks for any help in advance. This Quest has a fuel system rich code and according to the trim and O2's it is rich. AFter resetting the Trim to 100%(the scan data on this one uses 100% like 0%), the O2 sensor...
May 07, 2007
2001 Ford Explorer Sport 4.0L Poor Idle Quality, Hesitation, MIL Lamp on VIN: 1FMYU70E81
P0172: rich condition. could this be intake gasket leaking or plugged cat
May 10, 2007
1996 GMC Yukon SLE 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GKEK13R8T
P0172: Fuel Trim System Rich (Bank 1). Hey everyone, I make it a point not to post unless I am up against it, and with this one I am. This 96 Yukon 5.7R has been to multiple shops with many parts replaced, and still a check engine light/misfire. I have found all cylinders show misfires, as well as ...
May 11, 2007
1996 GMC Yukon SLE 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GKEK13R8T
P0172: Fuel Trim System Rich (Bank 1). Hey everyone, I make it a point not to post unless I am up against it, and with this one I am. This 96 Yukon 5.7R has been to multiple shops with many parts replaced, and still a check engine light/misfire. I have found all cylinders show misfires, as well as ...
May 14, 2007