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P0174 Diagnostic Trouble Code Discussion for March 2019

Fuel System Lean (Bank 2)


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Trouble Ticket Help Requests for DTC P0174
Help Request Posted
2007 Ford F-150 XLT 4.2L Excessive Emissions, Poor Fuel Economy VIN: 1FTRF12217
P0174: testing and results. Got a ford with wacked out fuel trims. Found o2 sensor melted found fuse 32 popped. Now the fuel trims are everywhere. Longterm 1 0 longterm b2 29 shorterm b1 20 shorterm b2 18 - 20. Did not find vacuum leak accept for egr{small leak} , found fuel filter c...
March 01, 2019
2001 Ford Taurus SE 3.0L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1FAFP55UX1
P0174: . Customer just purchased vehicle, vehicle comes in stalling, and running rough. I have smoke tested intake system, put fresh fuel in vehicle, vehicle was basically on empty. I have looked at the oxygen sensors to make sure they were operating correctly. I h...
March 14, 2019
2001 Ford Taurus SE 3.0L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1FAFP55UX1
P0174: . Customer just purchased vehicle, vehicle comes in stalling, and running rough. I have smoke tested intake system, put fresh fuel in vehicle, vehicle was basically on empty. I have looked at the oxygen sensors to make sure they were operating correctly. I h...
March 18, 2019
2007 Ford Explorer Sport Trac Limited 4.6L Misfire, MIL Lamp on VIN: 1FMEU53857
P0174: Lean on bank 2. Vehicle came in for front wheel bearings per customer request (diagnosed at dealer). When vehicle came in, it had check engine light on and a dead misfire on cylinder #4. We installed an ignition coil which we thought took care of misfire. Came back in wit...
March 21, 2019
2005 Chevrolet Silverado 1500 4.8L MIL Lamp on VIN: 1GCEK19VX5
P0174: Fuel Trim System Lean (Bank 2). This truck runs good. Short and long term fuel trims at idle are less than 5. Going up hill 2000 to 2500 rpm, 35 to 40% throttle long term fuel on both banks is 20. Freeze frame showed codes were set at same conditions with 25 long term fuel trims. Wide op...
March 23, 2019
2004 BMW 325Ci 2.5L MIL Lamp on VIN: WBABD33464
P0174: Lean bank 2. P0171 and P0174 are present. Before posting I read almost all of the iAtn posts on these codes and did lots of testing as listed above but to reiterate: 1) STFT +/- 3% at idle LTFT +18%.LTFT drops slightly at 2K rpm. 2) MAF readings 3.1 g/s at idl...
March 25, 2019