Join Now
International Automotive Technicians Network

P0174 Diagnostic Trouble Code Discussion for July 2014

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
2009 Chevrolet Suburban 1500 LT 5.3L Stall VIN: 1GNFK26389
P0174: fuel trim. I have a Suburban with 5.3l that came in on the tow truck died out in the evening before when we had 90 degree weather. The next morning would not restart. I scanned the engine 1st got the codes pulled, reset codes and the car started. I next ran the fuel pres...
July 01, 2014
2004 Chevrolet Tahoe LS 5.3L MIL Lamp on VIN: 1GNEK13Z94
P0174: Fuel Trim System Lean (Bank 2). I have long term fuel trims that climb to 23-25 rapidly even right after a reset. These fuel trims stay there at all rpm's and load ranges. I'm thinking I have a logic problem in the PCM Fuel tests 10% alcohol and gravity test is normal. PCM data pid reads 10%...
July 11, 2014
2004 Ford F-150 FX4 5.4L MIL Lamp on, Slight lack of power VIN: 1FTPW14534
P0174: Lean Bank 2. ... codes only (P0171 and P0174). They were NOT complaining of a lack of power, it just seems that way to me. It is a lifted vehicle with large tires, so that may be the culprit. The long term fuel trims are 14-18+ at idle and ...
July 11, 2014
1999 Ford F-250 Lariat 5.4L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 2FTPX28L0X
P0174: Bank 2 lean. PID readings: Load=17%, Baro=149Hz, 13 PSI, LTFT banks 1 & 2= 25%, MAF= .9 volts, O211 & 12= 0 volts, O221 is switching, 22=.6 volts, STFT 1 & 2= -3% to 3%. Coolant was low, topped off, leaking from radiator. No HCs present in cooling system, oil l...
July 16, 2014
2006 BMW 530xi 3.0L Poor Idle Quality, Cuts out, Stall, MIL Lamp on VIN: WBANF73536
P0174: system lean b2. Vehicle has check engine light, sometimes will stall, when hot started, idle will fluctuate and b rough(almost misfire) po171 and 174 repeat very soon after driving. We replaced all the tubes hoses etc for crankase ventilation, as we had low vacuum reading in ...
July 18, 2014
2006 BMW 530xi 3.0L Poor Idle Quality, Cuts out, Stall, MIL Lamp on VIN: WBANF73536
P0174: system lean b2. Vehicle has check engine light, sometimes will stall, when hot started, idle will fluctuate and b rough(almost misfire) po171 and 174 repeat very soon after driving. We replaced all the tubes hoses etc for crankase ventilation, as we had low vacuum reading in ...
July 20, 2014
2005 Ford F-150 XL 4.2L MIL Lamp on VIN: 1FTRF12215
P0174: Too lean. Help Ford Techs! This F150 keeps trowing lean codes and Im not sure what the problem is, Ive resealed the upper intake and cleaned EGR valve passages, the pipe is cold at idle and all seems well, its had the PCV hose and valve replaced and no detectable vac ...
July 22, 2014
2006 Ford F-250 Super Duty XLT 5.4L MIL Lamp on, low power VIN: 1FTSW21596
P0174: lean b2. ... truck in stating he just had spark plugs replaced(at a dif shop) and ever since then it sets p0171/174 and has low power. by low power i mean it will go hwy speeds ok but is just not the power it should be. like maybe 75% of what i feel it should have. I v...
July 24, 2014
2006 Ford F-250 Super Duty XLT 5.4L MIL Lamp on, low power VIN: 1FTSW21596
P0174: lean b2. ... truck in stating he just had spark plugs replaced(at a dif shop) and ever since then it sets p0171/174 and has low power. by low power i mean it will go hwy speeds ok but is just not the power it should be. like maybe 75% of what i feel it should have. I v...
July 28, 2014