Join Now
International Automotive Technicians Network

P0174 Diagnostic Trouble Code Discussion for April 2009

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
2001 BMW 525i 2.5L MIL Lamp on VIN: WBADS43451
P0174: System too lean Bank2. Hi, fellow techs, I need some help on this 525i wagon.The vehicle came in with multiple codes.I have replaced B2 S1 O2 sensor and broken PCV hose from crankcase vent valve to oil dip stick tube to fix lean codes and O2 heater code.Now,I have a problem checking...
April 02, 2009
2001 BMW 325Ci 2.5L MIL Lamp on VIN: WBABS33471
P0174: Lean limit bank two Mult at 12. This vehicle is a dealer failed attempt to diagnose and fix. They had this car for over three months and no luck at all. When I got the car, the customer said to keep it until it is fixed. I told her that will fix it. The dealer "said" they had enginee...
April 07, 2009
1999 Ford Explorer Sport 4.0L MIL Lamp on VIN: 1FMYU24E4X
P0174: leanbank2. ... perfectly codes keep coming back,stft1.56 bank1,stft-0.78 bank2,ltft24.96 bank1,ltft24.18bank2 [...] patterns are good.no vacume leaks found my questin is should not the fuel pressure rise under accell,mitchel gives 35 to 65 psi rather a wide range. the sy...
April 08, 2009
2001 Infiniti I30 3.0L Poor Idle Quality, Cuts out, Stall VIN: JNKCA31A41
P0174: Fuel Trim Lean (Bank 2). Thanks in advance for all who reply. This car came in for a belt noise, Put a new tensioner and fixed noise. But found on test drive that car had no power, also pops back through intake. Car will barely run when it is cold but when it warms up will stay idlein...
April 08, 2009
1999 Ford Windstar LX 3.8L MIL Lamp on VIN: 2FMZA514XX
P0174: lean condition bank 2. well hello there guys.we have a 1999 ford windstar 3.8l with 135 k.the complaint has always been lean condition on both banks po171 po174..data shows ltft 33%stft25% almost identical on scan tool for both banks.baro is 158hz 99kpa ,we've replaced a new fuel pu...
April 09, 2009
2000 Ford E-150 Econoline 4.2L Poor Idle Quality, MIL Lamp on VIN: 1FTRE1421Y
P0174: system lean. I have this e150 that came in sputtering and barely idling with a check engine light on. Off idle engine smooths out.I ran a smoke test as a bad pcv elbow has caused this sympton many times.I found no leak but replaced a weathered hose anyway. A little researc...
April 10, 2009
1999 Ford Windstar LX 3.8L MIL Lamp on VIN: 2FMZA514XX
P0174: lean condition bank 2. well hello there guys.we have a 1999 ford windstar 3.8l with 135 k.the complaint has always been lean condition on both banks po171 po174..data shows ltft 33%stft25% almost identical on scan tool for both banks.baro is 158hz 99kpa ,we've replaced a new fuel pu...
April 14, 2009
2000 Toyota 4Runner SR5 3.4L MIL Lamp on VIN: JT3HN86R2Y
P0174: lean. truck sets a p0174 lean code intermitent, fuel trim was -18% before repairing no vacum to the fuel pressure regulator, drove truck 4 times to confirm repair. light came back on for the customer the next day. fuel trim was good at -5% when checked at shop. repl...
April 17, 2009
2000 Chevrolet Silverado 1500 4.3L Hesitation, Surge, Cuts out, MIL Lamp on VIN: 1GCEC14WXY
P0174: Fuel Trim System Lean (Bank 2). ... customers sons got a DUI under age about a year ago. His license was suspended and the truck sat til about a month ago. On the second day of driving, customer notices a loud knocking noise from the engine, so he had it towed in. First thing i noticed is th...
April 20, 2009
2004 Chevrolet Express 3500 6.0L Poor Idle Quality, MIL Lamp on VIN: 1GBJG31U54
P0174: Fuel Trim System Lean (Bank 2). van will sometimes idle low or stall at idle, usually in gear. I can not control the iac with scanner but I can control it with a separate controller hook up to the iac. has anyone run into this problem and can tell me if it's a wiring problem or something els...
April 21, 2009
1997 Lincoln Continental Spinmaker Edition 4.6L Poor Idle Quality, Surge, Cuts out, Stall, MIL Lamp on VIN: 1LNLM97V1V
P0174: Lean Bank 2. ... can't get it through emissions. The MIL light was on with lean codes (P0171, P0174), egr flow codes (p1408), ect code(P1116), HO2S code(P1127). Tested egr and flow-ok, ect tested ok, MAF signal looks good with no drop outs. LTFT on both banks is 25! STFT o...
April 21, 2009
2000 Ford Explorer XLS 4.0L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1FMYU60E3U
P0174: fuel system lean bank 2. i have aquired this 2000 for explorer sport from another mechanic that has replaced most basic items to attempt to repair the stalling and misfire issue, the girl that drives this vehicle is in medical school and she can never drop the vehicle off for more tha...
April 24, 2009
2000 Chevrolet Silverado 1500 4.3L Hesitation, Surge, Cuts out, MIL Lamp on VIN: 1GCEC14WXY
P0174: Fuel Trim System Lean (Bank 2). ... customers sons got a DUI under age about a year ago. His license was suspended and the truck sat til about a month ago. On the second day of driving, customer notices a loud knocking noise from the engine, so he had it towed in. First thing i noticed is th...
April 27, 2009
2005 Ford F-150 XL 4.2L MIL Lamp on VIN: 2FTRF17294
P0174: system too lean bank 2. hello everybody, i just wanted to say thank you for all the help with this one. it started around 6 weeks ago. came in with the above listed codes i smoked the upper and lower intakes-no problem found. fuel filter appeared o.e. i replaced it, test drove-light...
April 27, 2009
2001 Ford F-450 Super Duty XL 6.8L MIL Lamp on VIN: 1FCNF53S4Y
P0174: lean bank two. Replace fuel pump last week, low fuel pressure 25 psi, 34-36 at rpm. Drive 20 -30 miles lean codes come back, long term reaches 12% and will go into drive open loop, under 6% load. above that will go into close loop. Checked for vac leaks with smoke , no leaks...
April 29, 2009
2001 BMW 525i 2.5L MIL Lamp on VIN: WBADS43451
P0174: System too lean Bank2. Hi, fellow techs, I need some help on this 525i wagon.The vehicle came in with multiple codes.I have replaced B2 S1 O2 sensor and broken PCV hose from crankcase vent valve to oil dip stick tube to fix lean codes and O2 heater code.Now,I have a problem checking...
April 02, 2009
2001 BMW 325Ci 2.5L MIL Lamp on VIN: WBABS33471
P0174: Lean limit bank two Mult at 12. This vehicle is a dealer failed attempt to diagnose and fix. They had this car for over three months and no luck at all. When I got the car, the customer said to keep it until it is fixed. I told her that will fix it. The dealer "said" they had enginee...
April 07, 2009
1999 Ford Explorer Sport 4.0L MIL Lamp on VIN: 1FMYU24E4X
P0174: leanbank2. ... perfectly codes keep coming back,stft1.56 bank1,stft-0.78 bank2,ltft24.96 bank1,ltft24.18bank2 [...] patterns are good.no vacume leaks found my questin is should not the fuel pressure rise under accell,mitchel gives 35 to 65 psi rather a wide range. the sy...
April 08, 2009
2001 Infiniti I30 3.0L Poor Idle Quality, Cuts out, Stall VIN: JNKCA31A41
P0174: Fuel Trim Lean (Bank 2). Thanks in advance for all who reply. This car came in for a belt noise, Put a new tensioner and fixed noise. But found on test drive that car had no power, also pops back through intake. Car will barely run when it is cold but when it warms up will stay idlein...
April 08, 2009
1999 Ford Windstar LX 3.8L MIL Lamp on VIN: 2FMZA514XX
P0174: lean condition bank 2. well hello there guys.we have a 1999 ford windstar 3.8l with 135 k.the complaint has always been lean condition on both banks po171 po174..data shows ltft 33%stft25% almost identical on scan tool for both banks.baro is 158hz 99kpa ,we've replaced a new fuel pu...
April 09, 2009
2000 Ford E-150 Econoline 4.2L Poor Idle Quality, MIL Lamp on VIN: 1FTRE1421Y
P0174: system lean. I have this e150 that came in sputtering and barely idling with a check engine light on. Off idle engine smooths out.I ran a smoke test as a bad pcv elbow has caused this sympton many times.I found no leak but replaced a weathered hose anyway. A little researc...
April 10, 2009
1999 Ford Windstar LX 3.8L MIL Lamp on VIN: 2FMZA514XX
P0174: lean condition bank 2. well hello there guys.we have a 1999 ford windstar 3.8l with 135 k.the complaint has always been lean condition on both banks po171 po174..data shows ltft 33%stft25% almost identical on scan tool for both banks.baro is 158hz 99kpa ,we've replaced a new fuel pu...
April 14, 2009
2000 Toyota 4Runner SR5 3.4L MIL Lamp on VIN: JT3HN86R2Y
P0174: lean. truck sets a p0174 lean code intermitent, fuel trim was -18% before repairing no vacum to the fuel pressure regulator, drove truck 4 times to confirm repair. light came back on for the customer the next day. fuel trim was good at -5% when checked at shop. repl...
April 17, 2009
2000 Chevrolet Silverado 1500 4.3L Hesitation, Surge, Cuts out, MIL Lamp on VIN: 1GCEC14WXY
P0174: Fuel Trim System Lean (Bank 2). ... customers sons got a DUI under age about a year ago. His license was suspended and the truck sat til about a month ago. On the second day of driving, customer notices a loud knocking noise from the engine, so he had it towed in. First thing i noticed is th...
April 20, 2009
2004 Chevrolet Express 3500 6.0L Poor Idle Quality, MIL Lamp on VIN: 1GBJG31U54
P0174: Fuel Trim System Lean (Bank 2). van will sometimes idle low or stall at idle, usually in gear. I can not control the iac with scanner but I can control it with a separate controller hook up to the iac. has anyone run into this problem and can tell me if it's a wiring problem or something els...
April 21, 2009
1997 Lincoln Continental Spinmaker Edition 4.6L Poor Idle Quality, Surge, Cuts out, Stall, MIL Lamp on VIN: 1LNLM97V1V
P0174: Lean Bank 2. ... can't get it through emissions. The MIL light was on with lean codes (P0171, P0174), egr flow codes (p1408), ect code(P1116), HO2S code(P1127). Tested egr and flow-ok, ect tested ok, MAF signal looks good with no drop outs. LTFT on both banks is 25! STFT o...
April 21, 2009
2000 Ford Explorer XLS 4.0L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1FMYU60E3U
P0174: fuel system lean bank 2. i have aquired this 2000 for explorer sport from another mechanic that has replaced most basic items to attempt to repair the stalling and misfire issue, the girl that drives this vehicle is in medical school and she can never drop the vehicle off for more tha...
April 24, 2009
2000 Chevrolet Silverado 1500 4.3L Hesitation, Surge, Cuts out, MIL Lamp on VIN: 1GCEC14WXY
P0174: Fuel Trim System Lean (Bank 2). ... customers sons got a DUI under age about a year ago. His license was suspended and the truck sat til about a month ago. On the second day of driving, customer notices a loud knocking noise from the engine, so he had it towed in. First thing i noticed is th...
April 27, 2009
2005 Ford F-150 XL 4.2L MIL Lamp on VIN: 2FTRF17294
P0174: system too lean bank 2. hello everybody, i just wanted to say thank you for all the help with this one. it started around 6 weeks ago. came in with the above listed codes i smoked the upper and lower intakes-no problem found. fuel filter appeared o.e. i replaced it, test drove-light...
April 27, 2009
2001 Ford F-450 Super Duty XL 6.8L MIL Lamp on VIN: 1FCNF53S4Y
P0174: lean bank two. Replace fuel pump last week, low fuel pressure 25 psi, 34-36 at rpm. Drive 20 -30 miles lean codes come back, long term reaches 12% and will go into drive open loop, under 6% load. above that will go into close loop. Checked for vac leaks with smoke , no leaks...
April 29, 2009