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P0174 Diagnostic Trouble Code Discussion for September 2009

Fuel System Lean (Bank 2)


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Trouble Ticket Help Requests for DTC P0174
Help Request Posted
2005 GMC Sierra 2500 HD 6.0L Poor Fuel Economy VIN: 1GTHK29UX5
P0174: Fuel Trim System Lean (Bank 2). ... light on. P0171, and P0174, lean bank 1 and 2. LT Fuel trims at +25 only at idle. Off idle they drop to about +14. Short term is consistant around 0 +/- 5. The guy took it to dealership where they told him intake gaskets. There is a updated gasket for thes...
September 02, 2009
2001 BMW 325xi 2.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: WBAEU33442
P0174: fuel trim limit exceeded rich. ... smoking from the exhaust. No other complaints. By reading the posts here on IATN we were directed to the technical service bulletin regarding the crankcase vent valve. We replaced the valve (purchased from dealer) and the 4 hoses which broke during removal...
September 08, 2009
2004 Ford F-150 Lariat 5.4L MIL Lamp on VIN: 1FTPX145X4
P0174: lean bank 2. Vehicle came in origanally for hard start rough idle, found broken clip at maf sensor, repaired and gone it was. Truck came back for ses light, found poo59 replaced ecm and 02 problem solved(ecm was not applying ground on heater circuit). During drive cycle se...
September 09, 2009
1999 Honda Passport EX 3.2L Excessive Emissions, MIL Lamp on VIN: 4S6CM58W4X
P0174: Fuel System Too Lean (Bank 2). ... came in with cel on code p0174. shecked FT with solus and was at +24%bank 2 -3%bank 1. O2 volts .04 and steady at bank2 s1. O2 volts switching normally between .100 + .800 on bank1 s1.gas machine showed extreme rich condition at tailpipe. Backprobed O2 sen...
September 10, 2009
2006 Dodge Charger SXT 3.5L Stall, MIL Lamp on VIN: 2B3KA46G56
P0174: Fuel System Lean (Bank 2). ... time officer states car stalls at idle and at highway speeds it allways restart vehicle has not duplicated the symtom while in the shop but has come in twice with the same codes pending codes are po42o and p0430 freeze frame po174 engine run 48min 45 sec t...
September 15, 2009
2002 Pontiac Firebird Trans Am 5.7L MIL Lamp on VIN: 2G2FV22G52
P0174: Fuel Trim System Lean (Bank 2). ... rid of p0171,p0174.This car is my sons new car he just had to have,with out being checked by a shop.I went to virgina and towed it back when he could not drive it no more due to fuel leak,oil leak.I installed a new delco fuel pump in tank after removeing t...
September 19, 2009
2004 Lexus RX330 3.3L Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on VIN: 272GA31U54
P0174: Fuel System Too Lean (Bank 2). ... atlanta day after very significant flooding. Customer states that no flood waters were encountered with vehicle. As you can see with the tests already performed on the vehicle, all tests concerning driveability are within normal values. after revving mo...
September 23, 2009
2005 Ford Five Hundred SEL 3.0L MIL Lamp on VIN: 1FAFP24155
P0174: Lean Bank 2. Typical Ford with P0172 & P0174 codes. I've diagnosed tons of these with no problem, but this one I'm stuck on. LTFT readings are at 25 both banks, hot and cold, idling and driving. I smoke tested the intake system, no leaks. Blocked off PCV valve, no chan...
September 24, 2009
2005 BMW X3 3.0i 3.0L MIL Lamp on VIN: WBXPA93485
P0174: lean bank 2. This bimmer came in with a po171 and I cleared it and it took 400 miles to return, this time it had po171,po174 so I replaced the parts listed above. The long term trim is 7.8% on both banks so I know this light is coming back, short term seems to be mainly le...
September 26, 2009
2003 Ford Expedition XLT 5.4L MIL Lamp on VIN: 1FMFU1623L
P0174: system lean bnk 2. ... p2198-p2196 and p0174 a few weeks ago. checked fuel pressure 53psi but drops instantly when you shut the truck off. pulled fpr vac. line pressure does not increase, needle on pressure gauge bouncing like a bad a/c compressor. cann...
September 29, 2009
2003 Jaguar S-Type 4.2L MIL Lamp on VIN: SAJEA01U03
P0174: system too lean bank2. customer stated check engine light came on & restricted performance also came on we diagnose the vehicle base on the complain,the above repairs,were performed.after customer picked up the vehicle a day later she called back stating the same problem,again c...
September 29, 2009
2005 Volkswagen Touareg 4.2L Stall VIN: WVGCM77L65
P0174: lean. vehicle starts and runs then stalls after 1-2 min. due to loss of fuel pressure. transfer pump supplies 60 psi at 8.5 amps then the pressure drops and the amps move to zero. I think that the fuel pump should take over fuel supply at this time because it has po...
September 29, 2009
2005 Mercury Grand Marquis GS 4.6L MIL Lamp on VIN: 2MEFM74W75
P0174: bank 2 lean. car runs great and the only complaint is the check engine light is on. only codes are po171 & po174 both lean codes. i installed a new fuel filter ( never been changed )scanned the o2 while driveing and they both seem to change rich to lean ( slow but i've...
September 30, 2009
2005 GMC Sierra 2500 HD 6.0L Poor Fuel Economy VIN: 1GTHK29UX5
P0174: Fuel Trim System Lean (Bank 2). ... light on. P0171, and P0174, lean bank 1 and 2. LT Fuel trims at +25 only at idle. Off idle they drop to about +14. Short term is consistant around 0 +/- 5. The guy took it to dealership where they told him intake gaskets. There is a updated gasket for thes...
September 02, 2009
2001 BMW 325xi 2.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: WBAEU33442
P0174: fuel trim limit exceeded rich. ... smoking from the exhaust. No other complaints. By reading the posts here on IATN we were directed to the technical service bulletin regarding the crankcase vent valve. We replaced the valve (purchased from dealer) and the 4 hoses which broke during removal...
September 08, 2009
2004 Ford F-150 Lariat 5.4L MIL Lamp on VIN: 1FTPX145X4
P0174: lean bank 2. Vehicle came in origanally for hard start rough idle, found broken clip at maf sensor, repaired and gone it was. Truck came back for ses light, found poo59 replaced ecm and 02 problem solved(ecm was not applying ground on heater circuit). During drive cycle se...
September 09, 2009
1999 Honda Passport EX 3.2L Excessive Emissions, MIL Lamp on VIN: 4S6CM58W4X
P0174: Fuel System Too Lean (Bank 2). ... came in with cel on code p0174. shecked FT with solus and was at +24%bank 2 -3%bank 1. O2 volts .04 and steady at bank2 s1. O2 volts switching normally between .100 + .800 on bank1 s1.gas machine showed extreme rich condition at tailpipe. Backprobed O2 sen...
September 10, 2009
2006 Dodge Charger SXT 3.5L Stall, MIL Lamp on VIN: 2B3KA46G56
P0174: Fuel System Lean (Bank 2). ... time officer states car stalls at idle and at highway speeds it allways restart vehicle has not duplicated the symtom while in the shop but has come in twice with the same codes pending codes are po42o and p0430 freeze frame po174 engine run 48min 45 sec t...
September 15, 2009
2002 Pontiac Firebird Trans Am 5.7L MIL Lamp on VIN: 2G2FV22G52
P0174: Fuel Trim System Lean (Bank 2). ... rid of p0171,p0174.This car is my sons new car he just had to have,with out being checked by a shop.I went to virgina and towed it back when he could not drive it no more due to fuel leak,oil leak.I installed a new delco fuel pump in tank after removeing t...
September 19, 2009
2004 Lexus RX330 3.3L Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on VIN: 272GA31U54
P0174: Fuel System Too Lean (Bank 2). ... atlanta day after very significant flooding. Customer states that no flood waters were encountered with vehicle. As you can see with the tests already performed on the vehicle, all tests concerning driveability are within normal values. after revving mo...
September 23, 2009
2005 Ford Five Hundred SEL 3.0L MIL Lamp on VIN: 1FAFP24155
P0174: Lean Bank 2. Typical Ford with P0172 & P0174 codes. I've diagnosed tons of these with no problem, but this one I'm stuck on. LTFT readings are at 25 both banks, hot and cold, idling and driving. I smoke tested the intake system, no leaks. Blocked off PCV valve, no chan...
September 24, 2009
2005 BMW X3 3.0i 3.0L MIL Lamp on VIN: WBXPA93485
P0174: lean bank 2. This bimmer came in with a po171 and I cleared it and it took 400 miles to return, this time it had po171,po174 so I replaced the parts listed above. The long term trim is 7.8% on both banks so I know this light is coming back, short term seems to be mainly le...
September 26, 2009
2003 Ford Expedition XLT 5.4L MIL Lamp on VIN: 1FMFU1623L
P0174: system lean bnk 2. ... p2198-p2196 and p0174 a few weeks ago. checked fuel pressure 53psi but drops instantly when you shut the truck off. pulled fpr vac. line pressure does not increase, needle on pressure gauge bouncing like a bad a/c compressor. cann...
September 29, 2009
2003 Jaguar S-Type 4.2L MIL Lamp on VIN: SAJEA01U03
P0174: system too lean bank2. customer stated check engine light came on & restricted performance also came on we diagnose the vehicle base on the complain,the above repairs,were performed.after customer picked up the vehicle a day later she called back stating the same problem,again c...
September 29, 2009
2005 Volkswagen Touareg 4.2L Stall VIN: WVGCM77L65
P0174: lean. vehicle starts and runs then stalls after 1-2 min. due to loss of fuel pressure. transfer pump supplies 60 psi at 8.5 amps then the pressure drops and the amps move to zero. I think that the fuel pump should take over fuel supply at this time because it has po...
September 29, 2009
2005 Mercury Grand Marquis GS 4.6L MIL Lamp on VIN: 2MEFM74W75
P0174: bank 2 lean. car runs great and the only complaint is the check engine light is on. only codes are po171 & po174 both lean codes. i installed a new fuel filter ( never been changed )scanned the o2 while driveing and they both seem to change rich to lean ( slow but i've...
September 30, 2009