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P0171 Diagnostic Trouble Code Discussion for April 2005

Fuel System Lean (Bank 1) *

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Trouble Ticket Help Requests for DTC P0171

	Help Request	Posted
	1996 Ford Windstar GL 3.8L MIL Lamp on VIN: 2FMDA5148T P0171: system lean bank 1. ... recent auction car that the local used car lot just bought, The mil keeps coming on with p0171 and p0174 codes for system lean, we can tell that all the normal windstar stuff has already been done to this van (see repair history) and we are kind of stumped...	April 01, 2005
	1996 Ford Windstar GL 3.8L MIL Lamp on VIN: 2FMDA5148T P0171: system lean bank 1. ... recent auction car that the local used car lot just bought, The mil keeps coming on with p0171 and p0174 codes for system lean, we can tell that all the normal windstar stuff has already been done to this van (see repair history) and we are kind of stumped...	April 02, 2005
	2001 Toyota Corolla CE 1.8L MIL Lamp on VIN: 1NXBR12ES1 P0171: Fuel System Too Lean (Bank 1). ... found O'2 not switching. Replaced O'2 sensor. Car came back with same P0171 code?	April 04, 2005
	2000 Nissan Maxima SE 3.0L Hesitation, Surge, Cuts out, MIL Lamp on VIN: JNICA31DXY P0171: Fuel Trim Lean (Bank 1). ... Nissan..I believe I have a bad maf and after trying to clean it has not really helped the problem..I have done a fair bit of reading in the archives and feel that I am on the right path ..I keep getting a p0171 code every couple weeks..and when I look at t...	April 06, 2005
	1999 Chevrolet Venture 3.4L MIL Lamp on VIN: 1GNDX03ESX P0171: Fuel Trim System Lean (Bank 1). ... vehicle has a dtc for p0171 fuel system lean. Freeze frame showed that code occurred at 37 mph 1732 rpm. basic diagnostics I performed found pcv elbow broken I replaced that cleared the code and reset fuel trim values took for test drive and almost immedia...	April 07, 2005
	1996 Ford F-150 Eddie Bauer 4.9L MIL Lamp on VIN: 1FTEF15Y9T P0171: lean bank 1. SURE COULD USE INPUT ON THIS ONE. LTFT ARE AT 2-4 ON CRUISE OR ACCEL. AT IDLE FUEL TRIM GOES TO 25 ON BANK ONE AND ABOUT 20 ON BANK 2. THE FUEL PRESSURE IS 50-60. MAF IS NEW ...HAS ABOUT .9 AT IDLE AND 4.2V AT wot. NO VACUUM LEAKS FOUND. UPSTREAN O2 SENSORS LO...	April 07, 2005
	2000 Nissan Maxima SE 3.0L Hesitation, Surge, Cuts out, MIL Lamp on VIN: JNICA31DXY P0171: Fuel Trim Lean (Bank 1). ... Nissan..I believe I have a bad maf and after trying to clean it has not really helped the problem..I have done a fair bit of reading in the archives and feel that I am on the right path ..I keep getting a p0171 code every couple weeks..and when I look at t...	April 07, 2005
	2000 Toyota Avalon XL 3.0L MIL Lamp on VIN: 4T1BF28B1Y P0171: Fuel System Too Lean (Bank 1). ses light comes on after driving 2 times has code po171 lean system found no problems anywhere fuel prssure is good 50psi. smoked engine no signs of leakage. had new converters from toyota before we started servicing 1 month ago, o2 sensors have been replace s...	April 08, 2005
	2000 Kia Sportage 2.0L MIL Lamp on VIN: KNDJB77230 P0171: Fuel System Too Lean (Bank 1). hello group car came in ,,she wanted a basic tune-up...check engine lite was on...had code po171,,,followed diagnostic tree found leak on plenum gasket. replaced it no more leaks cleared light,,,car came back for same code..did the diag, chart and measured all...	April 18, 2005
	1999 Toyota 4Runner Limited 3.4L MIL Lamp on VIN: JT3HN87R7X P0171: Fuel System Too Lean (Bank 1). We have been servicing this vehicle over an extended period of time due to the customer not being able to bring the vehicle easily.First the converter was replace & everything was good for awhile & later we replace the frotnt A/F sensor due to MIL ligh...	April 18, 2005
	2001 Chrysler PT Cruiser 2.4L code setting VIN: 3C8FY4BB71 P0171: Fuel System Lean. Ok fellas, I need some help. 01 Pt Cruiser with 60k miles came in with a check engine light. Codes indicate 1/1 O2 lean. I checked fuel pressure and it is good. TPS is working normally and idle voltage is .76v. Map seems to be fine and ECT is right on. I check...	April 19, 2005
	2001 Chrysler PT Cruiser 2.4L code setting VIN: 3C8FY4BB71 P0171: Fuel System Lean. Ok fellas, I need some help. 01 Pt Cruiser with 60k miles came in with a check engine light. Codes indicate 1/1 O2 lean. I checked fuel pressure and it is good. TPS is working normally and idle voltage is .76v. Map seems to be fine and ECT is right on. I check...	April 20, 2005
	2001 Dodge Ram 3500 Van 5.9L Poor Idle Quality, Misfire VIN: 2BWB35Z41K P0171: Fuel System Lean (Bank 1). Van came in running rather poor. We scoped it and found bad wqires, cap & rotor. Replaced these and went for test drive. Engine seemed to cut out and would occasionally idle rough like it was missing. Would clear up just off idle. We Motorvacced engine and...	April 22, 2005
	1998 Ford Windstar GL 3.8L MIL Lamp on VIN: 2FMZA5148W P0171: Lean. SES light on lean codes both banks. High long term fuel at idle both banks 18 to 20. Ok at cruise. O2s switching good.MAS sensor checkes out ok. Tried another one to be sure. Can not find any vacum leaks internal or external. Truck runs good. I know there is a...	April 27, 2005
	2000 Toyota Celica GT 1.8L Hesitation, MIL Lamp on VIN: JTDPR32T8Y P0171: Fuel System Too Lean (Bank 1). Very randomly, only has happend on freeway check engine light comes on. Same code both times. We did a BG fuel injection/decarbonize service. Checked for vacuum leaks, everyhting ok. Monitored data on scanner, all normal. Inspected spark plugs, look fine. Clea...	April 27, 2005
	1995 Dodge Neon High Line 2.0L MIL Lamp on VIN: 1B3ES47C8S P0171: lean bank 1. This vehicle continues to produce code PO171 (lean bank 1). We did find worn out plug wires which we just replaced. Drove it 15 miles and code reappeared. Performed MotorVac. Cleared code by disconnecting battery. Drove it 15 miles and code reappeared. I'm us...	April 28, 2005