Join Now
International Automotive Technicians Network

P0174 Diagnostic Trouble Code Discussion for October 2008

Fuel System Lean (Bank 2)


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0174
Help Request Posted
1996 Ford E-150 Econoline 5.8L Hesitation, Misfire, MIL Lamp on VIN: 1FMEE11H8T
P0174: System too Lean Bank 2. ... engine would ocaisionaly be hard to start/starter turn slowly. and 2) it often mildly hesitated under load in mornings for first 20 minutes or so. Other system repairs were also requested if engine was found sound. Initially tested for cylinder head / gas...
October 02, 2008
1997 Ford Expedition XLT 4.6L MIL Lamp on VIN: 1FMRU1761W
P0174: fuel system lean bank 2. hello ford guys, need some help on this one. came in a week ago with both dtc's p0171 & po174. maf hertz was only 133 - should be 153 - 159 for our location. replaced the maf sensor. vehicle returned today with same trouble codes. maf hertz back to 138. sm...
October 02, 2008
2002 Jeep Liberty Sport 3.7L MIL Lamp on VIN: IJ46L48K02
P0174: Fuel System Lean (Bank 2). ... lean, p0174 bank 2 lean, p0442 small evap leak, and p0455 large evap leak, we repaired the evap leaks( 2 broken lines) we smoked the intake for posable leaks none found, o2 readings look good LT fuel trims are both at +32 map coolent temp and all other rea...
October 02, 2008
1997 Ford Expedition Eddie Bauer 5.4L MIL Lamp on VIN: 1FMFU18L2V
P0174: lean bank 2. the codes will set on a short test drive. idles perfect.
October 09, 2008
2003 Ford Windstar SE 3.8L MIL Lamp on VIN: 2FMZA52493
P0174: Lean condition H2O12. Hi Guys, Looking for some help for this one, Have MIL light on with a PO171 and PO174 (lean condition bank 1 and 2) at first the O2 readings on both upstream sensors were around 80mv. I forced a rich condition and the sensors responded by going to 850mv. the v...
October 12, 2008
2000 Lincoln Navigator 5.4L Poor Idle Quality, MIL Lamp on VIN: 5LMPU28A2Y
P0174: lean bank 2. THIS TRUCK KEEPS SETTING CODE p0174 p0171. MASS AIR FLOW SENSOR HAS BEEN REPLACED WITH KNOW GOOD ONE. YOU CAN DRIVE THIS TRUCK ON THE HIGHWAY FOR 2 HOURS AND NOT SET THIS CODE. DRIVE IT AROUND TOWN AND IT SETS 174 171 LEAN BANK 1 AND 2. THE INTAKE MANIFOLD WAS...
October 15, 2008
1999 Ford Mustang GT 4.6L Cuts out, Stall, MIL Lamp on VIN: 1FAFP42X5X
P0174: Bank 2 system too lean. ... intermittant lack of power and stalling at stops. About 6 months ago the car was towed for a no start. Car started for me with no symtoms. Scan test showed lean running codes. I replaced a (80%) plugged fuel filter and cleared codes. Car is now back with P...
October 20, 2008
1999 Ford E-150 Econoline 4.2L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 1FTRE1420X
P0174: system lean b2. came in with P0171 and p0174 cleaned fuel injectors and intake,was very dirty.checked fuel pressure and smoke tested. Found small leaks from intake shafts and dissmissed as too small.watched scan data O2 sensors switching in sync Tps flawless MAF I thought a l...
October 22, 2008
2002 Ford Windstar LX 3.8L Poor Idle Quality, Cuts out, Stall, Misfire VIN: 2FMZA55432
Checking cam signal, lots of noise and hash on wave form. If you unplug IAC valve cam signal goes clean and vehicle runs great other than no idle control with IAC unplugged. If you clear codes with IAC unplugged you have that obvious code and can run car at 15...
October 22, 2008
2001 BMW 330i 3.0L MIL Lamp on, no driveability prob VIN: WBAAV53431
P0174: Too lean for too long bank 2. This problem has occurred at long random intervals for 2 or 3 years. Judging from freeze-frame data, it seems to happen at cruise, 65-70 mph, 1/4 to 1/3 throttle, 2200 to 2500 rpm. No driveability symptoms whatsoever. Most recent freeze frame data: rpm=2359,...
October 23, 2008
2002 Ford Windstar LX 3.8L Poor Idle Quality, Cuts out, Stall, Misfire VIN: 2FMZA55432
Checking cam signal, lots of noise and hash on wave form. If you unplug IAC valve cam signal goes clean and vehicle runs great other than no idle control with IAC unplugged. If you clear codes with IAC unplugged you have that obvious code and can run car at 15...
October 23, 2008
2002 Ford E-250 Econoline 5.4L Misfire, MIL Lamp on, NO POWER CAT CLEAN VIN: 1FTNE24L62
P0174: lean bnk2. problem was light to med. missfires on acelaration.with codes.plugs, and related coils were replaced. fuel filter was plugged. after repair due to time, found fuel press.not per. spec.and not holding.press.is going too high[over55-70plus]. have done press. reg...
October 27, 2008
2004 GMC Savana 2500 4.8L Misfire VIN: 1GTGG25V54
P0174: Fuel Trim System Lean (Bank 2). Hi guys, hope someone has seen something similar to this. Van came in 6 mo. ago with bad misfire on #6 and other 3 midle plugs both sides. Performed injector drop test and looked ok. Ran through motorvac twice and misfires quit. Still had idle rougher than i w...
October 28, 2008
1997 Cadillac Seville SLS 4.6L MIL Lamp on VIN: 1G6KS52Y7V
P0174: Fuel Trim System Lean (Bank 2). pulling my hair out over this one.Dont know aht else to look at. Monitering o2's and B2S1 is lazy and stays lean longer that the rest.found no vac leaks.fuel pressure is good.
October 29, 2008
1995 Ford F-150 Special 4.9L Stall, MIL Lamp on VIN: Y4TLA88515
P0174: bank 2 lean exhust. ... cranks,starts stalls out,if you keep cutting key on off it starts up ,then stalls,the more you do this the better it gets after about 10 starts it runs fine all day cranks good starts every time.after 5 minutes of driving codes p0171,p0174,come on bank1, b...
October 29, 2008
2001 Land Rover Discovery Series II SE 4.0L MIL Lamp on VIN: SALTW12451
P0174: bank 2 lean. Car came in for state inspection . Failed due to codes in memory. Checked for vacuum leaks,smoke tested manifold, looks good. Also checked MAF for readings ,seem to be with in range. there are no noticeable performance problems. the problem on this vehicle is ...
October 30, 2008
2000 Ford Expedition XLT 5.4L Poor Idle Quality, MIL Lamp on VIN: 1FMPU18C5Y
Hello, this vehicle runs extrely poor at idle when cold. I have Searhed for vac leaks with propane and come up with nothing. As soon as it is warm runs like a champ. Idle is good and performance is good. When cold it tries to idle up, and the LT trims stay at ...
October 31, 2008
2003 Ford E-450 Super Duty Custom 6.8L MIL Lamp on VIN: 1FDXE45SO3
P0174: bank 2 running lean. long term fuel trims are high enough to set a bank two code. reading about +21 on bank two and +18 on bank one. cleaned mass air flow and checked for vacuum leaks and found none. after reseting kam, fuel trims are now down a bit, bank two is now +16 and bank o...
October 31, 2008
2006 Ford Crown Victoria Police Interceptor 4.6L MIL Lamp on VIN: 2FAFP71W26
P0174: bank 2 lean. ... everyone. i have a 2006 crown vic from our local station. car came in with p0171 and p0174, not uncommon for us to see this. check fuel trims st was +5 - +10 and lt was +39 both banks. i sprayed for vacumm leaks found that intake like normal leaking, so we...
October 31, 2008
1996 Ford E-150 Econoline 5.8L Hesitation, Misfire, MIL Lamp on VIN: 1FMEE11H8T
P0174: System too Lean Bank 2. ... engine would ocaisionaly be hard to start/starter turn slowly. and 2) it often mildly hesitated under load in mornings for first 20 minutes or so. Other system repairs were also requested if engine was found sound. Initially tested for cylinder head / gas...
October 02, 2008
1997 Ford Expedition XLT 4.6L MIL Lamp on VIN: 1FMRU1761W
P0174: fuel system lean bank 2. hello ford guys, need some help on this one. came in a week ago with both dtc's p0171 & po174. maf hertz was only 133 - should be 153 - 159 for our location. replaced the maf sensor. vehicle returned today with same trouble codes. maf hertz back to 138. sm...
October 02, 2008
2002 Jeep Liberty Sport 3.7L MIL Lamp on VIN: IJ46L48K02
P0174: Fuel System Lean (Bank 2). ... lean, p0174 bank 2 lean, p0442 small evap leak, and p0455 large evap leak, we repaired the evap leaks( 2 broken lines) we smoked the intake for posable leaks none found, o2 readings look good LT fuel trims are both at +32 map coolent temp and all other rea...
October 02, 2008
1997 Ford Expedition Eddie Bauer 5.4L MIL Lamp on VIN: 1FMFU18L2V
P0174: lean bank 2. the codes will set on a short test drive. idles perfect.
October 09, 2008
2003 Ford Windstar SE 3.8L MIL Lamp on VIN: 2FMZA52493
P0174: Lean condition H2O12. Hi Guys, Looking for some help for this one, Have MIL light on with a PO171 and PO174 (lean condition bank 1 and 2) at first the O2 readings on both upstream sensors were around 80mv. I forced a rich condition and the sensors responded by going to 850mv. the v...
October 12, 2008
2000 Lincoln Navigator 5.4L Poor Idle Quality, MIL Lamp on VIN: 5LMPU28A2Y
P0174: lean bank 2. THIS TRUCK KEEPS SETTING CODE p0174 p0171. MASS AIR FLOW SENSOR HAS BEEN REPLACED WITH KNOW GOOD ONE. YOU CAN DRIVE THIS TRUCK ON THE HIGHWAY FOR 2 HOURS AND NOT SET THIS CODE. DRIVE IT AROUND TOWN AND IT SETS 174 171 LEAN BANK 1 AND 2. THE INTAKE MANIFOLD WAS...
October 15, 2008
1999 Ford Mustang GT 4.6L Cuts out, Stall, MIL Lamp on VIN: 1FAFP42X5X
P0174: Bank 2 system too lean. ... intermittant lack of power and stalling at stops. About 6 months ago the car was towed for a no start. Car started for me with no symtoms. Scan test showed lean running codes. I replaced a (80%) plugged fuel filter and cleared codes. Car is now back with P...
October 20, 2008
1999 Ford E-150 Econoline 4.2L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 1FTRE1420X
P0174: system lean b2. came in with P0171 and p0174 cleaned fuel injectors and intake,was very dirty.checked fuel pressure and smoke tested. Found small leaks from intake shafts and dissmissed as too small.watched scan data O2 sensors switching in sync Tps flawless MAF I thought a l...
October 22, 2008
2002 Ford Windstar LX 3.8L Poor Idle Quality, Cuts out, Stall, Misfire VIN: 2FMZA55432
Checking cam signal, lots of noise and hash on wave form. If you unplug IAC valve cam signal goes clean and vehicle runs great other than no idle control with IAC unplugged. If you clear codes with IAC unplugged you have that obvious code and can run car at 15...
October 22, 2008
2001 BMW 330i 3.0L MIL Lamp on, no driveability prob VIN: WBAAV53431
P0174: Too lean for too long bank 2. This problem has occurred at long random intervals for 2 or 3 years. Judging from freeze-frame data, it seems to happen at cruise, 65-70 mph, 1/4 to 1/3 throttle, 2200 to 2500 rpm. No driveability symptoms whatsoever. Most recent freeze frame data: rpm=2359,...
October 23, 2008
2002 Ford Windstar LX 3.8L Poor Idle Quality, Cuts out, Stall, Misfire VIN: 2FMZA55432
Checking cam signal, lots of noise and hash on wave form. If you unplug IAC valve cam signal goes clean and vehicle runs great other than no idle control with IAC unplugged. If you clear codes with IAC unplugged you have that obvious code and can run car at 15...
October 23, 2008
2002 Ford E-250 Econoline 5.4L Misfire, MIL Lamp on, NO POWER CAT CLEAN VIN: 1FTNE24L62
P0174: lean bnk2. problem was light to med. missfires on acelaration.with codes.plugs, and related coils were replaced. fuel filter was plugged. after repair due to time, found fuel press.not per. spec.and not holding.press.is going too high[over55-70plus]. have done press. reg...
October 27, 2008
2004 GMC Savana 2500 4.8L Misfire VIN: 1GTGG25V54
P0174: Fuel Trim System Lean (Bank 2). Hi guys, hope someone has seen something similar to this. Van came in 6 mo. ago with bad misfire on #6 and other 3 midle plugs both sides. Performed injector drop test and looked ok. Ran through motorvac twice and misfires quit. Still had idle rougher than i w...
October 28, 2008
1997 Cadillac Seville SLS 4.6L MIL Lamp on VIN: 1G6KS52Y7V
P0174: Fuel Trim System Lean (Bank 2). pulling my hair out over this one.Dont know aht else to look at. Monitering o2's and B2S1 is lazy and stays lean longer that the rest.found no vac leaks.fuel pressure is good.
October 29, 2008
1995 Ford F-150 Special 4.9L Stall, MIL Lamp on VIN: Y4TLA88515
P0174: bank 2 lean exhust. ... cranks,starts stalls out,if you keep cutting key on off it starts up ,then stalls,the more you do this the better it gets after about 10 starts it runs fine all day cranks good starts every time.after 5 minutes of driving codes p0171,p0174,come on bank1, b...
October 29, 2008
2001 Land Rover Discovery Series II SE 4.0L MIL Lamp on VIN: SALTW12451
P0174: bank 2 lean. Car came in for state inspection . Failed due to codes in memory. Checked for vacuum leaks,smoke tested manifold, looks good. Also checked MAF for readings ,seem to be with in range. there are no noticeable performance problems. the problem on this vehicle is ...
October 30, 2008
2000 Ford Expedition XLT 5.4L Poor Idle Quality, MIL Lamp on VIN: 1FMPU18C5Y
Hello, this vehicle runs extrely poor at idle when cold. I have Searhed for vac leaks with propane and come up with nothing. As soon as it is warm runs like a champ. Idle is good and performance is good. When cold it tries to idle up, and the LT trims stay at ...
October 31, 2008
2003 Ford E-450 Super Duty Custom 6.8L MIL Lamp on VIN: 1FDXE45SO3
P0174: bank 2 running lean. long term fuel trims are high enough to set a bank two code. reading about +21 on bank two and +18 on bank one. cleaned mass air flow and checked for vacuum leaks and found none. after reseting kam, fuel trims are now down a bit, bank two is now +16 and bank o...
October 31, 2008
2006 Ford Crown Victoria Police Interceptor 4.6L MIL Lamp on VIN: 2FAFP71W26
P0174: bank 2 lean. ... everyone. i have a 2006 crown vic from our local station. car came in with p0171 and p0174, not uncommon for us to see this. check fuel trims st was +5 - +10 and lt was +39 both banks. i sprayed for vacumm leaks found that intake like normal leaking, so we...
October 31, 2008