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P0174 Diagnostic Trouble Code Discussion for December 2006

Fuel System Lean (Bank 2)


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Trouble Ticket Help Requests for DTC P0174
Help Request Posted
2003 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: 1J4GW48S83
P0174: Fuel System Lean (Bank 2). Roadtested the vehicle while monitoring short-term and long-term adaptives. the 1/1 short-term adaptives were fluctuating +2 to -3 (approximately), where as the 2/1 short-term was up to +32 (with long-term also clocking up)and down to 0. This will lead to the ...
December 06, 2006
1999 Ford Windstar LX 3.8L Excessive Emissions, MIL Lamp on VIN: 2FMZA5143X
P0174: Too lean bank two. ... has absolutely no drivability issues, only the two codes P0171 & P0174 too lean bank one and two, along with some messed up fuel trims. I work on many of these vans and have had great success repairing these codes in the past by performing the usual r...
December 07, 2006
1998 Oldsmobile Aurora 4.0L MIL Lamp on VIN: 1G3GR62C0W
P0174: Fuel Trim System Lean (Bank 2). ... door"? First time I've seen this. Owners complaint is CE lite, runs fine. Codes P0171 and P0174. I can spray carb cleaner at loud "whistling" trap door at front of intake manifold and bring LTFT from + 37% down to normal, or even flood out engi...
December 10, 2006
1998 Ford Ranger Splash 4.0L MIL Lamp on VIN: 1FTYR14X7W
P0174: System to lean bank 2. ... condition setting with this Ranger... setting codes p0171 and p0174. Apon start up, my long term fuel trim values are between 30-40%, while check for vacuum leaks, I found the upper intake plenum gaskets leaking, tube from EGR valve to intake seal leaking,...
December 11, 2006
1996 Ford E-250 Econoline 4.9L MIL Lamp on VIN: 1FTFS24Y3T
P0174: lean air/fuel ratio. ... codes p0171/p0174. fuel pump was replaced last month (it failed) mass air flow sensor was replaced same day - it had 151hz reading. normal in this area is 156hz. battery was disconnected and cables touched together to reset KAM. all vacuum hoses including ...
December 12, 2006
1999 Ford Windstar LX 3.8L Poor Idle Quality, MIL Lamp on VIN: 2FMZA5144X
P0174: bank 1 system too lean. hello ford techs,have this windstar with an intermittent idle problem,retrieve codes 171 & 174 for lean condition, thought it was easy enuff,check for vacuum leaks-none found even smoke tested & tested old fashion way,so you think its the air box (maf)...
December 13, 2006
1997 Mazda B4000 4.0L MIL Lamp on VIN: 4F4DR17X8V
P0174: Adaptive Fuel Trim Too Lean (Bank 2). Help Mazda/Ford techs,I'm a GM fuel/elelctrical guy that rarely works on these.I have a MT2500 and had to program it to read as Ford to get into this system.Seems to communicate just fine.Looks all like a Ford truck to me.Have these lean codes,but truck runs g...
December 20, 2006
1998 Ford Contour SVT 2.5L MIL Lamp on VIN: 1FALP68GXW
P0174: bank 2 lean. We smoke tested vehicle, no leaks found, except from breather hole at idle air control valve, (not sure if this is normal, have that used smoke machine too often on a ford) Long trim on bank 1 and bank2 max out at 25%, There is no driviablity problem except th...
December 23, 2006
2001 Cadillac Catera 3.0L Misfire, MIL Lamp on VIN: WO6VR54R61
P0174: Fuel Trim System Lean (Bank 2). this vehicle high long term fueltrim. when getting to 23 percent the check engine lite comes on. we cleaned the mass air flow, checked for vac leaks, checked fuel pressure which is 42psi, and replaced a plugged fuel filter. after driving several time the fuel ...
December 27, 2006
2003 Ford E-250 4.2L Poor Fuel Economy, MIL Lamp on VIN: 1FTNS24253
P0174: system too lean b2. After performing the TSB described above the van was good for aprox. 350 miles. Then the MIL came back on with all the same codes excluding the p0300 misfire code. I performed this TSB with care, properly tourging bolts in sequence and cleaning sufaces perfect...
December 29, 2006
2003 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: 1J4GW48S83
P0174: Fuel System Lean (Bank 2). Roadtested the vehicle while monitoring short-term and long-term adaptives. the 1/1 short-term adaptives were fluctuating +2 to -3 (approximately), where as the 2/1 short-term was up to +32 (with long-term also clocking up)and down to 0. This will lead to the ...
December 06, 2006
1999 Ford Windstar LX 3.8L Excessive Emissions, MIL Lamp on VIN: 2FMZA5143X
P0174: Too lean bank two. ... has absolutely no drivability issues, only the two codes P0171 & P0174 too lean bank one and two, along with some messed up fuel trims. I work on many of these vans and have had great success repairing these codes in the past by performing the usual r...
December 07, 2006
1998 Oldsmobile Aurora 4.0L MIL Lamp on VIN: 1G3GR62C0W
P0174: Fuel Trim System Lean (Bank 2). ... door"? First time I've seen this. Owners complaint is CE lite, runs fine. Codes P0171 and P0174. I can spray carb cleaner at loud "whistling" trap door at front of intake manifold and bring LTFT from + 37% down to normal, or even flood out engi...
December 10, 2006
1998 Ford Ranger Splash 4.0L MIL Lamp on VIN: 1FTYR14X7W
P0174: System to lean bank 2. ... condition setting with this Ranger... setting codes p0171 and p0174. Apon start up, my long term fuel trim values are between 30-40%, while check for vacuum leaks, I found the upper intake plenum gaskets leaking, tube from EGR valve to intake seal leaking,...
December 11, 2006
1996 Ford E-250 Econoline 4.9L MIL Lamp on VIN: 1FTFS24Y3T
P0174: lean air/fuel ratio. ... codes p0171/p0174. fuel pump was replaced last month (it failed) mass air flow sensor was replaced same day - it had 151hz reading. normal in this area is 156hz. battery was disconnected and cables touched together to reset KAM. all vacuum hoses including ...
December 12, 2006
1999 Ford Windstar LX 3.8L Poor Idle Quality, MIL Lamp on VIN: 2FMZA5144X
P0174: bank 1 system too lean. hello ford techs,have this windstar with an intermittent idle problem,retrieve codes 171 & 174 for lean condition, thought it was easy enuff,check for vacuum leaks-none found even smoke tested & tested old fashion way,so you think its the air box (maf)...
December 13, 2006
1997 Mazda B4000 4.0L MIL Lamp on VIN: 4F4DR17X8V
P0174: Adaptive Fuel Trim Too Lean (Bank 2). Help Mazda/Ford techs,I'm a GM fuel/elelctrical guy that rarely works on these.I have a MT2500 and had to program it to read as Ford to get into this system.Seems to communicate just fine.Looks all like a Ford truck to me.Have these lean codes,but truck runs g...
December 20, 2006
1998 Ford Contour SVT 2.5L MIL Lamp on VIN: 1FALP68GXW
P0174: bank 2 lean. We smoke tested vehicle, no leaks found, except from breather hole at idle air control valve, (not sure if this is normal, have that used smoke machine too often on a ford) Long trim on bank 1 and bank2 max out at 25%, There is no driviablity problem except th...
December 23, 2006
2001 Cadillac Catera 3.0L Misfire, MIL Lamp on VIN: WO6VR54R61
P0174: Fuel Trim System Lean (Bank 2). this vehicle high long term fueltrim. when getting to 23 percent the check engine lite comes on. we cleaned the mass air flow, checked for vac leaks, checked fuel pressure which is 42psi, and replaced a plugged fuel filter. after driving several time the fuel ...
December 27, 2006
2003 Ford E-250 4.2L Poor Fuel Economy, MIL Lamp on VIN: 1FTNS24253
P0174: system too lean b2. After performing the TSB described above the van was good for aprox. 350 miles. Then the MIL came back on with all the same codes excluding the p0300 misfire code. I performed this TSB with care, properly tourging bolts in sequence and cleaning sufaces perfect...
December 29, 2006