P0171 Diagnostic Trouble Code Discussion for April 2021
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 2013 Ford Escape SEL 2.0L Stall, MIL Lamp on VIN: 1FMCU9H93D P0171: bank 1 lean. Vehicle came in with an occasional stall. It runs well under all conditions throttle response, idle quality, and overall power. It has never stalled for me, only for the owner. Code set at idle and long term trim is 28 percent at idle. Long term trims fall... |
April 10, 2021 | |
| 2013 Ford Escape SEL 2.0L Stall, MIL Lamp on VIN: 1FMCU9H93D P0171: bank 1 lean. Vehicle came in with an occasional stall. It runs well under all conditions throttle response, idle quality, and overall power. It has never stalled for me, only for the owner. Code set at idle and long term trim is 28 percent at idle. Long term trims fall... |
April 11, 2021 | |
| 2011 GMC Terrain SLE 2.4L high fuel trim VIN: 2CTALMEC0B P0171: lean bank 1. have replaced the upper catalyst a second time because they are after market and ive run into problems before. upper o2 is switching normally down stream at .7 to .8 at cruise up stream switches normally and down stream stuck at .15 at idle. smoke tested i... |
April 22, 2021 | |
| 2004 Ford F-150 FX4 5.4L Poor Idle Quality, Surge, Cuts out VIN: 1FTPW14544 P0171: System lean bank one. ... engine replacement (used). At first timing chains rattled on start up, bank one vct sitting at -16 degrees of error. Also no power and p2106. We removed the timing cover to find bank one chain off by one tooth. Timing components were all new except the... |
April 27, 2021 |
