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P0171 Diagnostic Trouble Code Discussion for October 2010

Fuel System Lean (Bank 1)


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Trouble Ticket Help Requests for DTC P0171
Help Request Posted
2002 Chevrolet Cavalier Z24 2.4L MIL Lamp on VIN: 1G1JH52716
P0171: Fuel System Lean (Bank 1). ... product. 2002 Cavalier Z24. Mil on and a slight bump at idle. P0171 Lean Bank 1. This vehicle was in 2 months ago with the same code. Checked 1/1 O2 and found a very slow response time and very lean biased. Choked it on propane and would only go to 700mv. ...
October 01, 2010
1999 Chrysler Sebring JXi 2.5L runs very lean VIN: 3C3EL55H7X
P0171: Fuel System Lean (Bank 1). ... said he only wanted diag. scoped crk sens and it was dead. cust decided to have us install new sens. car then started and ran, not good but it ran.cust brought the car back stating it felt like it was running on two cyls. test drove car and it had no power...
October 05, 2010
2001 Chevrolet Silverado 1500 4.3L Misfire, MIL Lamp on VIN: 1GCEC149W1
P0171: Fuel Trim System Lean (Bank 1). Guys this one is driving me nuts. I have good fuel presure I think. My guage is bad but reads about 50lbs at idle, I know its supposed to be 60 but thats not that short. I have smoke tested this thing for vacuum leaks and didnt find any. I have a missfire on c...
October 06, 2010
2001 Chevrolet Silverado 1500 4.3L Misfire, MIL Lamp on VIN: 1GCEC149W1
P0171: Fuel Trim System Lean (Bank 1). Guys this one is driving me nuts. I have good fuel presure I think. My guage is bad but reads about 50lbs at idle, I know its supposed to be 60 but thats not that short. I have smoke tested this thing for vacuum leaks and didnt find any. I have a missfire on c...
October 07, 2010
2002 Land Rover Freelander SE 2.5L MIL Lamp on VIN: SALNY22272
P0171: Lambo regulator bank 1. I was told car wouldnt go over a curtain speed I drove it seemed fine no engine light on but has stored codes. Idles Very Little Rough Long term Trim's are about 8.5 to 7.0
October 07, 2010
2008 Ford E-350 Super Duty 5.4L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1FDSF31588
P0171: Bank 1 lean. Hi we have this truck we have changed the fuel rail pressure sensor and catalytic converters both with oe parts and we have bog down when accelerator pedal is to floor if you let up 1/2 inch it runs fine however you have no pass gear
October 13, 2010
1995 Mercury Cougar XR-7 4.6L Surge, Stall, MIL Lamp on VIN: 1MELM62W3S
P0171: Lean bank 1. This 95 cougar will not idle. It idles for a few seconds then races up to 1500 then dies. Or it slowly idles down until it dies. Or it wanders around until it dies. It's never the same twice. 02 readings seam ok. All readings fluctuate with RPMs. I'm hoping so...
October 14, 2010
1998 Ford F-150 XLT 5.4L MIL Lamp on VIN: 1FTRX18L4W
P0171: Lean bank 1. ... give on this one, Can't put my finger on a absolute fault, and I dont like trying parts its against my code of ethics. As noted in previous repair history 2 wks ago customer came in with a MIL lamp on found a code P0174 lean bank 2 Checked for exhaust leak...
October 19, 2010
2002 Nissan Frontier SC 3.3L MIL Lamp on VIN: 1N6MD27YX2
P0171: Fuel Trim Lean (Bank 1). I have a 02 n0ssan frontier 3.3 super charged.belong to anoter shop.truck engine was replaced with one that is not super charged.truck now running very lean on boths banks,at idle and wot.all goodies that could cause lean condition has been checked.fuel pressu...
October 19, 2010
2006 Chevrolet Trailblazer LS 4.2L MIL Lamp on VIN: 1GNDT13S36
P0171: Fuel System Lean (Bank 1). I'm flipping out. Please read this with full attention or do not read my post. Truck runs fantasic. No issues,great power, just a nice truck. Check engine comes on PO171 at random,hot or cold. We have done the following: #1 checked basics- vaccums, o2, maf, fu...
October 20, 2010
2002 Nissan Frontier SC 3.3L MIL Lamp on VIN: 1N6MD27YX2
P0171: Fuel Trim Lean (Bank 1). I have a 02 n0ssan frontier 3.3 super charged.belong to anoter shop.truck engine was replaced with one that is not super charged.truck now running very lean on boths banks,at idle and wot.all goodies that could cause lean condition has been checked.fuel pressu...
October 20, 2010
2000 Ford Windstar LX 3.8L Poor Fuel Economy, MIL Lamp on VIN: 2FMDA5340Y
P0171: Lean bank 1. Well, I took this van on because the lady is super nice, old and sick... yea, i know. So to fix the lean codes, I replaced the intake gaskets, but i still have long term trim numbers +20 at idle, driving and cruising their around +5+6. I also tested the dpfe...
October 22, 2010
2003 Ford Taurus SE 3.0L MIL Lamp on VIN: 1FAHP56S53
P0171: system lean B1. hey everyone, need your help again, this car has been in several times in the past few months for different problems now the CEL is on for lean codes, i have smoke tested the car but nothing was found. vehicle runs great but the LTFT is pegged at +25 at idle, ...
October 22, 2010
2002 BMW X5 3.0i 3.0L MIL Lamp on VIN: 5UXFA53532
P0171: Bank 1 Too Lean. Hello all I have this BMW X5 3.0 here with the codes listed in the info section after repairs performed in repair history. Car now runs smooth and fuel trims are just slightly lean driving on road and at idle in the shop. Customer lives 1000 feet higher than ...
October 27, 2010