P0171 Diagnostic Trouble Code Discussion for December 2017
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 2014 Chevrolet Cruze LT 1.4L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: 1G1PC5SB4E P0171: Lean mixture. ... 40197 miles. It has a P0171 code. The cam cover has been changed. I get LT fuel trim percentages of 34 at idle, it does go to near zero going down the highway. My ST fuel trim is 15% at idle, it hovers near zero and below going down the highway. My up... |
December 02, 2017 | |
| 2004 Honda Accord LX 2.4L MIL Lamp on VIN: JHMCM56384 P0171: Fuel System Too Lean (Bank 1). on this accord its running lean at idle honda scanner I'm getting 1.24 and drop to 1.00 at 1500 rpm freeze frame show code set at idle 859 rpm, 158f temp engine load at 30% at 0 mph but what was strange to me is the maf g/s was reading 39 g/s at idle on th... |
December 02, 2017 | |
| 2004 Honda Accord LX 2.4L MIL Lamp on VIN: JHMCM56384 P0171: Fuel System Too Lean (Bank 1). on this accord its running lean at idle honda scanner I'm getting 1.24 and drop to 1.00 at 1500 rpm freeze frame show code set at idle 859 rpm, 158f temp engine load at 30% at 0 mph but what was strange to me is the maf g/s was reading 39 g/s at idle on th... |
December 03, 2017 | |
| 2003 Mercedes-Benz C230 Kompressor 1.8L MIL Lamp on VIN: WDBRN40J83 P0171: lean at part throttle. Good Afternoon, The car has 135k miles on it now, Our concern is the 25 percent on the o2 sensor, in lamda its at 1300 to 1700 mv and at 14.2% We have smoke tested the intake system and charge air system with no leaks. We have also smoked from the dip s... |
December 15, 2017 | |
| 2008 Ford Taurus X SEL 3.5L MIL Lamp on, High Fuel Trims VIN: 1FMDK02W08 P0171: System Too Lean Bank 1. Vehicle originally came in for intermittent shifting/gear engagement concerns. Had A P0720, P0722, and P0443 in addition to the lean code. Have those three solved but this lean code has me a bit puzzled. Freeze frame data showed both banks over 25% LTFT an... |
December 24, 2017 |
