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P0171 Diagnostic Trouble Code Discussion for June 2006

Fuel System Lean (Bank 1)


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Trouble Ticket Help Requests for DTC P0171
Help Request Posted
2000 Saturn LW2 3.0L Lean code VIN: 1G8JW82R2Y
P0171: Fuel Trim System Lean (Bank 1). This car was purchased about 3 months ago, but the condition has only been happening for the last month or so. I have confirmed fuel pressure in spec, checked EGR passages and response to commanded inputs from scan tool. The evap has a noticeable impact on idl...
June 05, 2006
2001 Volkswagen Jetta GLS 1.8L MIL Lamp on VIN: 3VWSE29M92
P0171: Bank 1 System too lean. hi techs, got this jetta with P0171 code, customer has been drove into dealer and our shop. We both replaced all related parts like air flow meter(dealer did),dealer even suggest customer to replace the air pump. We found there is a crack hose (PCV vent hose ...
June 06, 2006
1999 Lexus RX300 3.0L Hesitation, MIL Lamp on VIN: JT6HF10U9X
P0171: lean system bank 1. ... code p0171 bank 1 lean. mass air flow sensor was replaced two weeks ago with oem part from lexus. engine has no vacuum leaks, smoked intake system to test gaskets and all was good. tested both air fuel ratio sensors with vantage and sensors seem to working...
June 07, 2006
2001 Volkswagen Jetta GLS 1.8L MIL Lamp on VIN: 3VWSE29M92
P0171: Bank 1 System too lean. hi techs, got this jetta with P0171 code, customer has been drove into dealer and our shop. We both replaced all related parts like air flow meter(dealer did),dealer even suggest customer to replace the air pump. We found there is a crack hose (PCV vent hose ...
June 10, 2006
2003 Cadillac DeVille 4.6L Poor Idle Quality, Misfire VIN: 1G6KD54Y43
P0171: Fuel Trim System Lean (Bank 1). ... codes p0171,p0174,p0300,p1574 present. replaced spark plugs and boots, bg induction. car idled great. test drive recreated miss. no codes stored, miss fired over 300 times in a short time. every cylinder miss fire has a differant count ranging from 48 to 3...
June 12, 2006
1999 Ford Windstar SE 3.8L MIL Lamp on VIN: 2FMDA5247X
P0171: lean. this vehicle came to our shop for mv inspection two years ago had same codes as now followed testing tree in alldata vehicle runs and drives like new cleaned maf last year and customer drove for many miles passed inspection this year nyinspection due light is ...
June 12, 2006
2003 Ford F-150 Lariat 4.6L Poor Idle Quality, Misfire, Lean/rich VIN: 2FTRX18WX3
P0171: Lean bank one. Prior repair could be important to fix. We did have cams locked down before replacing timing chains. Engine vacuum is good. Fuel pressure is good. Motorvac performed after codes set. LTFT B1 was about 22-25, B2 was about -20. Numbers on left side {B2} improved...
June 19, 2006
2000 Mercury Sable GS 3.0L Poor Idle Quality, MIL Lamp on VIN: IMEFM59S0Y
P0171: bank 1 lean. Well guy this is my first post, have help you guys be fore and now did help. came in with 171,174 both banks lean.Fuel in specs,check and smoke test for vacuum leak because short trim at 22%,long at 33% npf.Cleaned mass no change. what it does is when comin to...
June 19, 2006
1996 Honda Civic DX 1.6L MIL Lamp on VIN: 1HGEJ6221T
P0171: Fuel System Too Lean. Got this Honda with p0171 code, mil on, checked over for vacuum leaks, nothing visible, runs good at idle, short fuel trim is high at idle, not very familiar with Honda, any help would be appreciated, Thanks in advance.
June 25, 2006
2002 Dodge Caravan Sport 3.3L MIL Lamp on VIN: 1B4GP25RX2
P0171: Fuel System Lean (Bank 1). ... cut looks like its from an animal eating the wires. Replaced sensors and ran car in shop and O2 was working good. Came back the next day with (P0134 upstream O2 stays at centre) light on. Replaced O2 under warranty and same problem. Checked wiring from O2 ...
June 26, 2006
2003 Dodge Neon SE 2.0L Hesitation, Stall, MIL Lamp on VIN: C23D145506
P0171: Fuel System Lean (Bank 1). good morning techs,this car has a hot run stall and stumble.fuel pressure seems ok needle varys maybe 2 lbs.fuel trims go to +31 when this happens cut the switch off restart the car everything now is fine .the car even runs ok.oddly enough all freeze frames wh...
June 28, 2006
2000 Saturn LW2 3.0L Lean code VIN: 1G8JW82R2Y
P0171: Fuel Trim System Lean (Bank 1). This car was purchased about 3 months ago, but the condition has only been happening for the last month or so. I have confirmed fuel pressure in spec, checked EGR passages and response to commanded inputs from scan tool. The evap has a noticeable impact on idl...
June 05, 2006
2001 Volkswagen Jetta GLS 1.8L MIL Lamp on VIN: 3VWSE29M92
P0171: Bank 1 System too lean. hi techs, got this jetta with P0171 code, customer has been drove into dealer and our shop. We both replaced all related parts like air flow meter(dealer did),dealer even suggest customer to replace the air pump. We found there is a crack hose (PCV vent hose ...
June 06, 2006
1999 Lexus RX300 3.0L Hesitation, MIL Lamp on VIN: JT6HF10U9X
P0171: lean system bank 1. ... code p0171 bank 1 lean. mass air flow sensor was replaced two weeks ago with oem part from lexus. engine has no vacuum leaks, smoked intake system to test gaskets and all was good. tested both air fuel ratio sensors with vantage and sensors seem to working...
June 07, 2006
2001 Volkswagen Jetta GLS 1.8L MIL Lamp on VIN: 3VWSE29M92
P0171: Bank 1 System too lean. hi techs, got this jetta with P0171 code, customer has been drove into dealer and our shop. We both replaced all related parts like air flow meter(dealer did),dealer even suggest customer to replace the air pump. We found there is a crack hose (PCV vent hose ...
June 10, 2006
2003 Cadillac DeVille 4.6L Poor Idle Quality, Misfire VIN: 1G6KD54Y43
P0171: Fuel Trim System Lean (Bank 1). ... codes p0171,p0174,p0300,p1574 present. replaced spark plugs and boots, bg induction. car idled great. test drive recreated miss. no codes stored, miss fired over 300 times in a short time. every cylinder miss fire has a differant count ranging from 48 to 3...
June 12, 2006
1999 Ford Windstar SE 3.8L MIL Lamp on VIN: 2FMDA5247X
P0171: lean. this vehicle came to our shop for mv inspection two years ago had same codes as now followed testing tree in alldata vehicle runs and drives like new cleaned maf last year and customer drove for many miles passed inspection this year nyinspection due light is ...
June 12, 2006
2003 Ford F-150 Lariat 4.6L Poor Idle Quality, Misfire, Lean/rich VIN: 2FTRX18WX3
P0171: Lean bank one. Prior repair could be important to fix. We did have cams locked down before replacing timing chains. Engine vacuum is good. Fuel pressure is good. Motorvac performed after codes set. LTFT B1 was about 22-25, B2 was about -20. Numbers on left side {B2} improved...
June 19, 2006
2000 Mercury Sable GS 3.0L Poor Idle Quality, MIL Lamp on VIN: IMEFM59S0Y
P0171: bank 1 lean. Well guy this is my first post, have help you guys be fore and now did help. came in with 171,174 both banks lean.Fuel in specs,check and smoke test for vacuum leak because short trim at 22%,long at 33% npf.Cleaned mass no change. what it does is when comin to...
June 19, 2006
1996 Honda Civic DX 1.6L MIL Lamp on VIN: 1HGEJ6221T
P0171: Fuel System Too Lean. Got this Honda with p0171 code, mil on, checked over for vacuum leaks, nothing visible, runs good at idle, short fuel trim is high at idle, not very familiar with Honda, any help would be appreciated, Thanks in advance.
June 25, 2006
2002 Dodge Caravan Sport 3.3L MIL Lamp on VIN: 1B4GP25RX2
P0171: Fuel System Lean (Bank 1). ... cut looks like its from an animal eating the wires. Replaced sensors and ran car in shop and O2 was working good. Came back the next day with (P0134 upstream O2 stays at centre) light on. Replaced O2 under warranty and same problem. Checked wiring from O2 ...
June 26, 2006
2003 Dodge Neon SE 2.0L Hesitation, Stall, MIL Lamp on VIN: C23D145506
P0171: Fuel System Lean (Bank 1). good morning techs,this car has a hot run stall and stumble.fuel pressure seems ok needle varys maybe 2 lbs.fuel trims go to +31 when this happens cut the switch off restart the car everything now is fine .the car even runs ok.oddly enough all freeze frames wh...
June 28, 2006