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P0171 Diagnostic Trouble Code Discussion for October 2009

Fuel System Lean (Bank 1)


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Trouble Ticket Help Requests for DTC P0171
Help Request Posted
2002 Buick Rendezvous CX Plus 3.4L MIL Lamp on VIN: 3G5DB03E52
P0171: Fuel Trim System Lean (Bank 1). This is long. Vehicle originally came in for int. ABS light and ABS activation at low speeds. Found both front sensors bad and replaced both hub ass. Cust. then wanted to fix check engine light. I forgot to write down the code numbers and check FF, but I do re...
October 01, 2009
2002 Chevrolet Cavalier 2.2L No Start VIN: 1G1JC52442
P0171: Fuel System Lean (Bank 1). I am lost on this one. Cranks but will not start. Backfire out of intake sometimes. Sometimes catches a little bit like on one cylinder but that is it. Seems as if the timing is way off. Started by swapping a new ignition module, no change. Took it back and ...
October 06, 2009
2001 Infiniti QX4 3.5L MIL Lamp on, lean exhaust bank 1 VIN: JNRDR07Y51
P0171: Fuel Trim Lean (Bank 1). ... lite and a code of P0171 lean bank 1. The o2 was flat lined so I replaced it and sent the car on it's way. 3 days later the lite came on again same code. The o2's were both moving fine but the bank 1 was more active as it was newer. So I cleaned the MAF se...
October 09, 2009
2004 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KF57954
P0171: Fuel Trim System Lean (Bank 1). I have a 04 cadillac custemer complained his mil light is on. I checked fuel trims long term was at 18 to 21. I put a fuel pump in it because fuel pressure is supost to be 41/47. light stayed out for an hour or so fuel pressure is 35 lbs still. I was leaning o...
October 16, 2009
2006 Chrysler Town & Country (Van) 3.3L Hesitation, MIL Lamp on VIN: 2A4GP44R66
P0171: lean bank one. ... fuel pump.runs but hesitates.mil comes on,p0171.i went and looked,long term fuel trim at 32%.front o2 swinging,rear steady at.8 volts.info i had said o2 sensors o-5 volts.friend decided to replace o2 sensors while i was trying to get more info.rechecked,fr...
October 16, 2009
2005 Dodge Durango Limited 5.7L MIL Lamp on VIN: 1D4HB48D05
P0171: Fuel System Lean (Bank 1). ... making me nuts. It has a P0171 and P0174. The long term fuel trim at idle is maxed at 33%. The ltft goes down to 15-20 when driving. I have smoked the intake and found no leaks. When you add supplemental fuel the ltft goes down to normal range. I replaced ...
October 19, 2009
2001 Ford Focus LX 2.0L MIL Lamp on VIN: 1FAFP33P32
P0171: lean bank 1. the vehicle has mill with p0171 vehicle runs fine, at idle fuel trim has 32% correction but as soon as you raise rpm fuel correction goes to 3% usually caused by vaccum leak i cannot find a leak anywhere i can fill the shop with propanne and fuel trimm doesnt ...
October 19, 2009
2006 Ford Taurus SE 3.0L Poor Idle Quality, Surge VIN: 1FAFP53U46
P0171: lean bank one. ... (slightly by about 150rpm). The P0171 and P0316 reset along with two new codes that I am not familiar with P0191 & P1233. The fuel trims are no w...
October 20, 2009
2006 Audi A3 2.0L No Start, Poor Idle Quality VIN: WAUHF78P26
P0171: bank 1 system too lean. thx in advance to all audi techs.car came to us with complaint of not restarting and setting check engine light & also fuel cap light after filling up.car will restart after 10 to 20 minutes but will run rough & finally clear up after a minute or so.ch...
October 21, 2009
1999 GMC Savana 2500 5.7L Misfire VIN: 1GTFG25R6X
P0171: Fuel Trim System Lean (Bank 1). ... missing. Had original ignition parts so we installed cap,rotor,wires and plugs (all delco) After 10 mile drive van developed miss at idle that would continue when accelerating. Now setting lean codes (p0171,p0174) Not sh...
October 22, 2009
1998 Pontiac Bonneville SE 3.8L Hesitation, Surge VIN: 1G2HX52K7W
P0171: Fuel System Lean. So i test drove the car and could feel right away this hiccup or glitchy feeling it exhibits. kind of like a lean miss or some backfire/too much egr feeling. Usually does it while cruising and then you accelerate, but it will act up while leaving a parking lot...
October 25, 2009
1998 Pontiac Bonneville SE 3.8L Hesitation, Surge VIN: 1G2HX52K7W
P0171: Fuel System Lean. So i test drove the car and could feel right away this hiccup or glitchy feeling it exhibits. kind of like a lean miss or some backfire/too much egr feeling. Usually does it while cruising and then you accelerate, but it will act up while leaving a parking lot...
October 27, 2009
1999 Buick Regal LS 3.8L Cuts out, MIL Lamp on VIN: 2G4WB52KOX
P0171: Fuel System Lean. ... have this Buick here which I have been pulling my hair out on. I have been chasing two code for some time now p0133 and p1133. Car came in this summer with light on and both codes in it watched scanner O2 switching slow so we put in a ac delco sensor in ba...
October 28, 2009
1998 Chevrolet Malibu 2.4L Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1G1ND52T0W
P0171: Fuel System Lean. This vehicle came in running very poorly. I have found various problems with several systems as you can tell by the repair history.(the exhaust cam was even off a tooth due the the tensioner malfunction) Now I have isolated a misfire and bucking going up hill ...
October 28, 2009
2001 Toyota Corolla LE 1.8L Cuts out VIN: 1NXBR12E71
P0171: Fuel System Too Lean (Bank 1). ... intermittently stalling\cutting off only at stops at idle. I was able to duplicate problem. Just idling in the bay in park in would cut off about every 15-45 minutes. It would immediately restart and run fine for another 15-45 min. I fixed the the P0300 P0...
October 28, 2009
2002 Ford Windstar 3.8L MIL Lamp on VIN: 2FMZA51412
P0171: Lean Bank 1. I have a windstar that has a lean code on both banks. I have cleaned throttle body, IAC, MAF, and changed fuel filter. When smoke testing there is a small leak on both IMRC and the EGR. Is this normal? I have another windstar with same codes and same codes and...
October 29, 2009
2001 Toyota Corolla LE 1.8L Cuts out VIN: 1NXBR12E71
P0171: Fuel System Too Lean (Bank 1). ... intermittently stalling\cutting off only at stops at idle. I was able to duplicate problem. Just idling in the bay in park in would cut off about every 15-45 minutes. It would immediately restart and run fine for another 15-45 min. I fixed the the P0300 P0...
October 30, 2009