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P0171 Diagnostic Trouble Code Discussion for March 2007

Fuel System Lean (Bank 1) *

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Trouble Ticket Help Requests for DTC P0171

	Help Request	Posted
	2001 Kia Sportage 2.0L MIL Lamp on VIN: KNDJA72391 P0171: Fuel System Too Lean (Bank 1). ... with a check engine light on.P0171,fuel system too lean.Checked freezeframe data and the long term fuel trim is at -1.5% and short term trim is at -3.5%.I checked alldata and for this code fuel trim should be at more than 23%.I erased the code and road tes...	March 01, 2007
	1996 Ford Taurus LX 3.0L MIL Lamp on VIN: 1FALP53S3T P0171: bank1lean. Have replaced the mass air flow sensor and checked powers and grounds . Watched the graphing with the snap-on vantage and pattern looks right. My baro readingis 26.9 and my hertz reading is150hz which is to low for my area I should read 157hz I also have taken...	March 06, 2007
	1997 Chrysler Concorde LX 3.5L MIL Lamp on VIN: 2C3HD56F7V P0171: Fuel System Lean (Bank 1). Hello all! This car seems to run fine, but both banks are running lean, adaptive memory is about +25% on both sides. Before the car came to our shop it has had all 4 o2 sensors replaced,plenum gasket,fuel pressure regulator,plugs and wires replaced.(according ...	March 07, 2007
	1996 Ford E-250 Econoline 4.9L Misfire VIN: 1FTFE24Y0T P0171: system lean bank 1. I have been struggling with this van. Came to us from another facility near where the van over-heated. Our customers driver pulled in and they diagnosed engine to have a head gasket failure. Vehicle was then towed to our shop. First, I performed a co2 test and...	March 07, 2007
	2005 Ford Five Hundred SEL 3.0L MIL Lamp on VIN: 1FAFP24135 P0171: . I could use some recommendations with this one. My Genisys is not updated to read this model year. I hooked it up to my emission tester to get these codes. Car seems to run OK. Thanks for any and all help!	March 07, 2007
	1996 Ford E-250 Econoline 4.9L Misfire VIN: 1FTFE24Y0T P0171: system lean bank 1. I have been struggling with this van. Came to us from another facility near where the van over-heated. Our customers driver pulled in and they diagnosed engine to have a head gasket failure. Vehicle was then towed to our shop. First, I performed a co2 test and...	March 08, 2007
	2002 Toyota Highlander 2.4L MIL Lamp on VIN: JTEGD2IA82 P0171: Fuel System Too Lean (Bank 1). per customer, problem happened all at once.started hard cold and check engine light came on.next day did not start unless throttle depressed	March 12, 2007
	1998 Ford Windstar GL 3.8L Cuts out, Stall VIN: 2FMZA5147W P0171: Bank 1 system lean. ... 98-24-6A . Good for few days than stalled . Repalced with new idle speed motor or IAC . Good for another few more days then stalled again . Idle steady 20 " vacuum . Now just got a P0171 with a rebuilt engine .	March 14, 2007
	1999 GMC Sierra 1500 SL 5.3L Poor Idle Quality, Hesitation, Cuts out, Misfire VIN: 1GTEC19TXX P0171: Fuel Trim System Lean (Bank 1). ... V8 Truck and had 2 codes, p0171 and p0174. We repaired the upper intake since our data was much like the ones that had that problem. After repair was done the codes do not come back but now the trck is skipping a low idle and when you dump the gas it goes ...	March 14, 2007
	2000 Ford F-150 XL 4.2L MIL Lamp on VIN: 1FTZX1723Y P0171: Lean Bank-1. This truck had the classic problems. Lean codes, broken pcv tubes. Replaced pcv tubes,checked intake for leaks with smoke machine, no leaks found after pcv hose repairs. Checked fuel pressure 35 at idle and 2000 rpm. Volume is good. The baro pid is below 157 a...	March 18, 2007
	2002 Dodge Ram 2500 5.9L Poor Idle Quality, Surge, Cuts out VIN: 3B7KC26Z72 P0171: Bank 1 Lean. After driving this truck with normal scan readings and no drivability problems, the upstream O2 sensor values will go to 0 and the fuel pulse width kicks up to 13-14 ms even at idle. It will buck and snort all the way back to the shop. Than after sitting in th...	March 19, 2007
	1999 Ford Windstar SE 3.8L Hesitation, Stall, Misfire VIN: 2FM2A514XX P0171: system lean bank 1. Hi all, This car came in with Check Engine light on (flashing) - car was running real bad acting like it would stall but never actually stall - also car would not get out of its own way - engine is also making a knocking noise - checked compression - ok - chec...	March 20, 2007
	2002 Ford Windstar LX 3.8L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 2FMZA55422 P0171: lean exhaust bank 1. this van barely runs i beleive data looks good in scanner. it runs stronger on some cylindets than others i have been advised of the plenum issues on this motor but they havnt seen one bad enough to run like this. any further advice or suggestions on low vacuu...	March 20, 2007
	2001 Ford Windstar SE Sport 3.8L MIL Lamp on, unknown VIN: 2FMZA57491 P0171: bank 1 too lean. ... in originally with a belt sqeel and we eventually figured out it was the cmp "shaft" siezing up. i was given the job and i replaced the shaft with a new one and a new cmp sensor.NOTE: when i put it in i used the tool but it was for a 3.0/4.0, not t...	March 22, 2007
	1998 Toyota Land Cruiser 4.7L MIL Lamp on VIN: JT3HT05J7W P0171: Fuel System Too Lean (Bank 1). hi everybody. i've got this toyota that keeps setting lean codes. tried replacing the mass air flow sensors because they seem to be reading low. can't find a vacuum leak. fuel pressure seems a little low at idle but it does step up higher rpms. fuel trims are ...	March 22, 2007
	2000 Ford Windstar SEL 3.8L MIL Lamp on VIN: 2FMDA5340Y P0171: system too lean bank1. ... the emissions test because the mil was on.the 2 dtc were p0171-p0174 the long term fuel trims were at + 13 we hooked the smoke machine up and found the tyoical intake plenum leak. we resealed the plenum and cleared the codes,told t...	March 24, 2007
	2003 Chevrolet Trailblazer North Face 4.2L MIL Lamp on VIN: 1GNET16SX3 P0171: Fuel System Lean (Bank 1). this vehicle was towed in with no power. started with the basic checks, fuel pressure ok. checked exhaust for restrictions, no restrictions. scan for codes came up with the codes lised above. checked o2 operation , operates fine. checked for misfire, no fault ...	March 26, 2007
	2004 Chevrolet Trailblazer LS 4.2L Poor Idle Quality, Stall VIN: 1GNDT13S64 P0171: Fuel System Lean (Bank 1). hook up scanner and read all sensors and data information pertaining to flow chart on code po171b. no problem found at present. custmer complaint, idle problem and no accelerator responds	March 26, 2007
	2005 Ford Five Hundred SEL 3.0L MIL Lamp on VIN: 1FAFP24135 P0171: . I could use some recommendations with this one. My Genisys is not updated to read this model year. I hooked it up to my emission tester to get these codes. Car seems to run OK. Thanks for any and all help!	March 27, 2007
	2002 Kia Sportage 2.0L Loss of Power VIN: KNDJB72342 P0171: Fuel System Too Lean (Bank 1). ... complaint. No MIL but a pending P0701 lean mixture B1S1. The customer is a college student and coming home drove the car for 2.5 hours after she filled up with gas and it started running very badly. It shuddered and would not go over 50mph. She thought she...	March 28, 2007
	2001 Land Rover Discovery Series II SD 4.0L Misfire, MIL Lamp on VIN: SALTLI5451 P0171: system too lean bank1. This vehicle has me scratching my head due to the lack of information available to me, both scanner wise and repair info. MIL will flash when under load , comp good, plug is good, wire is not leaking, and no other codes are present other than the lean codes. O...	March 28, 2007
	2001 Land Rover Discovery Series II SD 4.0L Misfire, MIL Lamp on VIN: SALTLI5451 P0171: system too lean bank1. This vehicle has me scratching my head due to the lack of information available to me, both scanner wise and repair info. MIL will flash when under load , comp good, plug is good, wire is not leaking, and no other codes are present other than the lean codes. O...	March 29, 2007
	1997 Toyota Camry CE 2.2L MIL Lamp on VIN: 4T1BG22K2V P0171: Fuel System Too Lean (Bank 1). ... camry about every six months (third time now)for a reoccuing dtc p0171 and a p1210.one of main problems i'm having is finding information on the p1210 code on the toyota information site (tis)i can't seem to find this code li...	March 30, 2007