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P0174 Diagnostic Trouble Code Discussion for November 2004

Fuel System Lean (Bank 2)


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Trouble Ticket Help Requests for DTC P0174
Help Request Posted
1998 Chevrolet K1500 Cheyenne 5.7L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 2GCEK19RXW
P0174: Fuel Trim System Lean (Bank 2). This truck has a rough idle all the time. The o2 sensor B2S1 seems to be stuck at 0.35v. LT fuel trim on Bank 2 is 25%. The truck had Bosch wires and uknown cap and rotor on it so we replaced it with AC Delco parts along with a new set of AC Delco plugs. The f...
November 02, 2004
1996 Chevrolet Express 1500 4.3L Stall, MIL Lamp on VIN: 1GCFG15W4T
P0174: Fuel Trim System Lean (Bank 2). If you start this van up it will start and run good. after a minute or two it will slowly start to bog and loose power. If I add propane the motor perks right up. Once it goes into closed loop the problem goes away. My gut tells me to replace the fuel pump. Bu...
November 05, 2004
1999 Ford Windstar LX 3.8L MIL Lamp on VIN: 2FMZA5141X
P0174: lean bank 2. looked for obvious problems and none found... i am at a loss here as to what is next to look for... heard that possible plastic intake problems... thanks in advance for any help
November 07, 2004
1999 Mazda B4000 SE 4.0L MIL Lamp on VIN: 4F4ZR17X9X
P0174: Adaptive Fuel Trim Too Lean (Bank 2). The customer brought this vehical in becuase the "check engine" light was on. With my scanner hooked up, the readings on the scanner, for the forward O2 sensors was showing that they were not functioning properly. At times the readings would stay at 0V...
November 08, 2004
1999 Mazda B4000 SE 4.0L MIL Lamp on VIN: 4F4ZR17X9X
P0174: Adaptive Fuel Trim Too Lean (Bank 2). The customer brought this vehical in becuase the "check engine" light was on. With my scanner hooked up, the readings on the scanner, for the forward O2 sensors was showing that they were not functioning properly. At times the readings would stay at 0V...
November 09, 2004
2000 Ford E-250 Econoline 5.4L MIL Lamp on VIN: 1FTNE24L9T
P0174: system lean bank 2. vehicle came in with check engine light on setting codes po171 and 174 system lean banks 1 and 2.found maf not swiching properly.maf was replaced and codes reset.customer took vehicle and next day check engine light back on same codes.checked for vacuum leaks ...
November 16, 2004
1997 Jaguar XK8 4.0L Hesitation, Cuts out, MIL Lamp on VIN: SAJGX2740V
P0174: bank 2 system lean. Hello I Have code p0174 currently & did have p0171 bank 1 lean & I found a dead 4 wire oxygen sensor upstream on pass bank replaced oxygen sensor now bank one swutches normally code gone but p0174 came to light found bank 2 upstream was not switching e...
November 16, 2004
1997 Lincoln Town Car Cartier 4.6L MIL Lamp on VIN: 1LNLM83W1V
P0174: . ... and P0174 keeps coming back We have done all the flow chart diagnostics and have replaced all 0/2 sensors,Changed the EGR checked the passages and Smoke checked the engine with no luck.Our fuel pressure is running @ 28# th...
November 16, 2004
1996 Chevrolet Express 1500 4.3L Stall, MIL Lamp on VIN: 1GCFG15W4T
P0174: Fuel Trim System Lean (Bank 2). If you start this van up it will start and run good. after a minute or two it will slowly start to bog and loose power. If I add propane the motor perks right up. Once it goes into closed loop the problem goes away. My gut tells me to replace the fuel pump. Bu...
November 18, 2004
1996 Ford E-250 Econoline 4.9L MIL Lamp on VIN: 1FTFE24Y6T
P0174: system too lean B2. Hello all, We have a E250 with CEL illuminated. scanned codes PO171 & PO174. American cars are not my forte and whant to get a heads up on what to look out for and check on this vehical. From these codes I would probably assume this vehical has a vac leak ...
November 24, 2004
1998 Chevrolet K1500 Cheyenne 5.7L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 2GCEK19RXW
P0174: Fuel Trim System Lean (Bank 2). This truck has a rough idle all the time. The o2 sensor B2S1 seems to be stuck at 0.35v. LT fuel trim on Bank 2 is 25%. The truck had Bosch wires and uknown cap and rotor on it so we replaced it with AC Delco parts along with a new set of AC Delco plugs. The f...
November 02, 2004
1996 Chevrolet Express 1500 4.3L Stall, MIL Lamp on VIN: 1GCFG15W4T
P0174: Fuel Trim System Lean (Bank 2). If you start this van up it will start and run good. after a minute or two it will slowly start to bog and loose power. If I add propane the motor perks right up. Once it goes into closed loop the problem goes away. My gut tells me to replace the fuel pump. Bu...
November 05, 2004
1999 Ford Windstar LX 3.8L MIL Lamp on VIN: 2FMZA5141X
P0174: lean bank 2. looked for obvious problems and none found... i am at a loss here as to what is next to look for... heard that possible plastic intake problems... thanks in advance for any help
November 07, 2004
1999 Mazda B4000 SE 4.0L MIL Lamp on VIN: 4F4ZR17X9X
P0174: Adaptive Fuel Trim Too Lean (Bank 2). The customer brought this vehical in becuase the "check engine" light was on. With my scanner hooked up, the readings on the scanner, for the forward O2 sensors was showing that they were not functioning properly. At times the readings would stay at 0V...
November 08, 2004
1999 Mazda B4000 SE 4.0L MIL Lamp on VIN: 4F4ZR17X9X
P0174: Adaptive Fuel Trim Too Lean (Bank 2). The customer brought this vehical in becuase the "check engine" light was on. With my scanner hooked up, the readings on the scanner, for the forward O2 sensors was showing that they were not functioning properly. At times the readings would stay at 0V...
November 09, 2004
2000 Ford E-250 Econoline 5.4L MIL Lamp on VIN: 1FTNE24L9T
P0174: system lean bank 2. vehicle came in with check engine light on setting codes po171 and 174 system lean banks 1 and 2.found maf not swiching properly.maf was replaced and codes reset.customer took vehicle and next day check engine light back on same codes.checked for vacuum leaks ...
November 16, 2004
1997 Jaguar XK8 4.0L Hesitation, Cuts out, MIL Lamp on VIN: SAJGX2740V
P0174: bank 2 system lean. Hello I Have code p0174 currently & did have p0171 bank 1 lean & I found a dead 4 wire oxygen sensor upstream on pass bank replaced oxygen sensor now bank one swutches normally code gone but p0174 came to light found bank 2 upstream was not switching e...
November 16, 2004
1997 Lincoln Town Car Cartier 4.6L MIL Lamp on VIN: 1LNLM83W1V
P0174: . ... and P0174 keeps coming back We have done all the flow chart diagnostics and have replaced all 0/2 sensors,Changed the EGR checked the passages and Smoke checked the engine with no luck.Our fuel pressure is running @ 28# th...
November 16, 2004
1996 Chevrolet Express 1500 4.3L Stall, MIL Lamp on VIN: 1GCFG15W4T
P0174: Fuel Trim System Lean (Bank 2). If you start this van up it will start and run good. after a minute or two it will slowly start to bog and loose power. If I add propane the motor perks right up. Once it goes into closed loop the problem goes away. My gut tells me to replace the fuel pump. Bu...
November 18, 2004
1996 Ford E-250 Econoline 4.9L MIL Lamp on VIN: 1FTFE24Y6T
P0174: system too lean B2. Hello all, We have a E250 with CEL illuminated. scanned codes PO171 & PO174. American cars are not my forte and whant to get a heads up on what to look out for and check on this vehical. From these codes I would probably assume this vehical has a vac leak ...
November 24, 2004