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P0174 Diagnostic Trouble Code Discussion for April 2011

Fuel System Lean (Bank 2)

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Trouble Ticket Help Requests for DTC P0174
Help Request Posted
2003 Chevrolet Tahoe Z71 5.3L Poor Idle Quality, MIL Lamp on VIN: 1GNEK13Z83
P0174: Fuel Trim System Lean (Bank 2). We have this vehicle in that a dealership diagnosed a faulty cat on this vehicle. We replaced the cat with oe, cleared codes and then it was running poorly. My tech replaced the b2s1 with an oe part. We are having a problem with b2 running lean. ltft is at 25,...
April 12, 2011
2003 GMC Yukon Denali 6.0L MIL Lamp on VIN: 1GKFK66U73
P0174: Fuel Trim System Lean (Bank 2). after changing the MAF with 4 NEW ones the readings ( trim ) get worse , I put a "test" unit in and it goes to 12-16 % LT 0 % (+-) 4% ST . is there a new PCM calibration for the new MAF units ?? unfortunately my "test " unit fails when hot !
April 13, 2011
2005 Lincoln LS Luxury 3.0L Poor Idle Quality, Hesitation, Surge, Misfire, MIL Lamp on VIN: 1LNHM87A65
P0174: Lean bank 2. ... codes on the second trip every time. Some times it sets a p0300 when it idles rough but not always. On light acceleration it has terrible spark knock, but seems to clear up and run good if you give it a decent amount of p...
April 20, 2011
2000 Lincoln Continental 4.6L No Start VIN: 1LHNM97V7Y
P0174: Lean condition. Car was towed in as no start,has spark and injector signal all plugs keep getting gas soaked,scan data readings all show normal cts normal iat.lowered front exhaust ypipe no change,compression checks good 165psi.any ideas?
April 22, 2011
2006 Ford F-250 Super Duty XL 5.4L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1FTSX21506
P0174: lean b2. This vehicle came in running rough with these codes.Figured few coils would fix 3&4. Thought had ticking noise on #1 bank. Pulled valve cover looking for broken valve spring and all is good with good compression. Truck misses instantly on start up, pops cy...
April 25, 2011