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P0174 Diagnostic Trouble Code Discussion for January 2005

Fuel System Lean (Bank 2)


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Trouble Ticket Help Requests for DTC P0174
Help Request Posted
1998 Ford Mustang 3.8L Bank 2 Lean VIN: 1FAFP4045W
P0174: Lean Bank 2. ... Motor runs well. PCM is setting B2 lean(P0174). The only problem I can see is at idle the LTFT Bank 2 is at 3-4% and Bank 1 is around 0% I wouldnt think a 3% difference would flag a problem. Above idle, they even out at about 0%. I smoked the motor and fou...
January 06, 2005
2000 Ford Explorer XLT 4.0L Poor Idle Quality, MIL Lamp on VIN: 1FMZU73E3Y
P0174: lean code. I have this Explorer, when started cold, engine does not want to idle and wants to stall. Once warm will idle and run ok. Both O2 sensors are reading rich. Sounds like vacuum leak around upper plenum, but cannot detect any. I can creat a vacuum leak and the O2...
January 10, 2005
2003 Ford Ranger Edge 3.0L Misfire VIN: 1FTYR10U13
P0174: System Too Lean Bank 2. Ranger came in with a misfire on #5. With codes listed it certainly sounds like #5 injector isn't supplying fuel. Since injector is under plenum, I put a scope on the wire (tan/black) that feeds the injector at the PCM. Had no activity so I tried the (brown/ta...
January 13, 2005
2001 Ford F-150 XL 4.2L MIL Lamp on, eng. noises times VIN: 1FTZX172X1
P0174: lean bank 2. ... will set P0171 and P0174 codes for lean on both banks. Freeze frames show the it is set low speeds and LTFT are 7-9 on both banks. I have check fuel pressure and check for vac leaks. I had a lazy o2 sensor on bank 1 couple months ago. So replaced both frt....
January 21, 2005
1997 Ford E-350 Econoline 5.4L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1FDKE37L3V
P0174: System to lean bank 2. Hello all. This headache was towed in unable to start. A quick check showed a lack of fuel problem so the first check was the fuel filter. It was clogged solid - could not blow through it at all! Replaced fuel filter and was able to get vehicle started. vehicl...
January 25, 2005
2000 Ford Explorer Limited 4.0L MIL Lamp on VIN: 1FMZU75EXY
P0174: lean bank2 sensor 1. THIS vehicle continues to come back with lean codes on either one bank or both depending on how long you drive it. It seems to trake about two weeks of normal driving to trip the MIL. The freeze frame data at last chech showed 39MPH, 40% load, STFT bank 0ne -3...
January 25, 2005
1997 Ford E-350 Econoline 5.4L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1FDKE37L3V
P0174: System to lean bank 2. Hello all. This headache was towed in unable to start. A quick check showed a lack of fuel problem so the first check was the fuel filter. It was clogged solid - could not blow through it at all! Replaced fuel filter and was able to get vehicle started. vehicl...
January 26, 2005
1997 Ford Explorer Sport 4.0L MIL Lamp on VIN: 1FMCU22X9V
P0174: b2s2 lean code. truck came back in today with the same lean codes. when i scanned the computer i found all the 02 readings were at 0.000 volts .no change with propane added. this o volts is on all three 02 sensors. tried a differant scanner and got the same readings. zero he...
January 28, 2005
1997 Ford F-150 4.6L MIL Lamp on
P0174: System lean bank 2. ... scaner some times say's error on fuel trim. Is setting P0171 & P0174 sys. lean codes. I have cleand and inspected MAF sensor looks good an reads good. o2's are switching/crosing center ok little slow but they are switching...
January 28, 2005
2000 Ford Mustang 3.8L MIL Lamp on VIN: 1FAFP4447Y
P0174: system too lean. mil ligth comes on after driven a while, again tdc's are po171,po174, did a vaccum leak test using smoke machine, no leak found. fuel pressure is 35 psi and 45psi no vacc map reading is at [...]/sec and at 2500 rpm is 12.5gsr/sec thi vehicle does not have a pl...
January 28, 2005
1997 Ford F-150 4.6L MIL Lamp on
P0174: System lean bank 2. ... scaner some times say's error on fuel trim. Is setting P0171 & P0174 sys. lean codes. I have cleand and inspected MAF sensor looks good an reads good. o2's are switching/crosing center ok little slow but they are switching...
January 30, 2005
1997 Mazda B4000 4.0L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 4F4CR16XOV
P0174: Adaptive Fuel Trim Too Lean (Bank 2). here is a truck we dont want to jump at replacing parts, need guidance in testing for possible causes. both o2 sensors are flatlined lean, seems fishy because we read of a history of intake manifold gaskets. its 4 hours to try the gaskets and over $200 to mist...
January 31, 2005
1998 Ford Mustang 3.8L Bank 2 Lean VIN: 1FAFP4045W
P0174: Lean Bank 2. ... Motor runs well. PCM is setting B2 lean(P0174). The only problem I can see is at idle the LTFT Bank 2 is at 3-4% and Bank 1 is around 0% I wouldnt think a 3% difference would flag a problem. Above idle, they even out at about 0%. I smoked the motor and fou...
January 06, 2005
2000 Ford Explorer XLT 4.0L Poor Idle Quality, MIL Lamp on VIN: 1FMZU73E3Y
P0174: lean code. I have this Explorer, when started cold, engine does not want to idle and wants to stall. Once warm will idle and run ok. Both O2 sensors are reading rich. Sounds like vacuum leak around upper plenum, but cannot detect any. I can creat a vacuum leak and the O2...
January 10, 2005
2003 Ford Ranger Edge 3.0L Misfire VIN: 1FTYR10U13
P0174: System Too Lean Bank 2. Ranger came in with a misfire on #5. With codes listed it certainly sounds like #5 injector isn't supplying fuel. Since injector is under plenum, I put a scope on the wire (tan/black) that feeds the injector at the PCM. Had no activity so I tried the (brown/ta...
January 13, 2005
2001 Ford F-150 XL 4.2L MIL Lamp on, eng. noises times VIN: 1FTZX172X1
P0174: lean bank 2. ... will set P0171 and P0174 codes for lean on both banks. Freeze frames show the it is set low speeds and LTFT are 7-9 on both banks. I have check fuel pressure and check for vac leaks. I had a lazy o2 sensor on bank 1 couple months ago. So replaced both frt....
January 21, 2005
1997 Ford E-350 Econoline 5.4L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1FDKE37L3V
P0174: System to lean bank 2. Hello all. This headache was towed in unable to start. A quick check showed a lack of fuel problem so the first check was the fuel filter. It was clogged solid - could not blow through it at all! Replaced fuel filter and was able to get vehicle started. vehicl...
January 25, 2005
2000 Ford Explorer Limited 4.0L MIL Lamp on VIN: 1FMZU75EXY
P0174: lean bank2 sensor 1. THIS vehicle continues to come back with lean codes on either one bank or both depending on how long you drive it. It seems to trake about two weeks of normal driving to trip the MIL. The freeze frame data at last chech showed 39MPH, 40% load, STFT bank 0ne -3...
January 25, 2005
1997 Ford E-350 Econoline 5.4L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1FDKE37L3V
P0174: System to lean bank 2. Hello all. This headache was towed in unable to start. A quick check showed a lack of fuel problem so the first check was the fuel filter. It was clogged solid - could not blow through it at all! Replaced fuel filter and was able to get vehicle started. vehicl...
January 26, 2005
1997 Ford Explorer Sport 4.0L MIL Lamp on VIN: 1FMCU22X9V
P0174: b2s2 lean code. truck came back in today with the same lean codes. when i scanned the computer i found all the 02 readings were at 0.000 volts .no change with propane added. this o volts is on all three 02 sensors. tried a differant scanner and got the same readings. zero he...
January 28, 2005
1997 Ford F-150 4.6L MIL Lamp on
P0174: System lean bank 2. ... scaner some times say's error on fuel trim. Is setting P0171 & P0174 sys. lean codes. I have cleand and inspected MAF sensor looks good an reads good. o2's are switching/crosing center ok little slow but they are switching...
January 28, 2005
2000 Ford Mustang 3.8L MIL Lamp on VIN: 1FAFP4447Y
P0174: system too lean. mil ligth comes on after driven a while, again tdc's are po171,po174, did a vaccum leak test using smoke machine, no leak found. fuel pressure is 35 psi and 45psi no vacc map reading is at [...]/sec and at 2500 rpm is 12.5gsr/sec thi vehicle does not have a pl...
January 28, 2005
1997 Ford F-150 4.6L MIL Lamp on
P0174: System lean bank 2. ... scaner some times say's error on fuel trim. Is setting P0171 & P0174 sys. lean codes. I have cleand and inspected MAF sensor looks good an reads good. o2's are switching/crosing center ok little slow but they are switching...
January 30, 2005
1997 Mazda B4000 4.0L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 4F4CR16XOV
P0174: Adaptive Fuel Trim Too Lean (Bank 2). here is a truck we dont want to jump at replacing parts, need guidance in testing for possible causes. both o2 sensors are flatlined lean, seems fishy because we read of a history of intake manifold gaskets. its 4 hours to try the gaskets and over $200 to mist...
January 31, 2005