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P0171 Diagnostic Trouble Code Discussion for June 2011

Fuel System Lean (Bank 1)


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Trouble Ticket Help Requests for DTC P0171
Help Request Posted
2000 Mitsubishi Montero Sport LS 3.0L No Start, Poor Idle Quality, Surge, Cuts out, Stall VIN: JA4MT31H1Y
P0171: system lean. Hey all need some help with this montero sport. it arrive at our door with the check engine light on and the air mass meter disconnected . it runs pretty good with the air mass meter disconnected. but has a code for air mass meter .when we connected it back th...
June 02, 2011
2000 Toyota Celica GT 1.8L MIL Lamp on VIN: JTDDR32T4Y
P0171: Fuel System Too Lean (Bank 1). ... problem(hate this car).Anyway have Code p0441.Have replaced carbon canister due to being common problem.Cleared code and returned.Replaced vsv on air cleaner after testing found occasnilly not energizing with jumper wire to battery.Replaced and sent out.Ca...
June 02, 2011
2006 Jeep Grand Cherokee Laredo 3.7L MIL Lamp on VIN: 1J4GR48K46
P0171: Fuel System Lean (Bank 1). ... Cherokee w/3.7. This jeep came in here with the MIL on and a p0171&174 were pulled. I smoked the intake and exhaust and of course found nothing. Checked the fuel pressure it was at 52-53 psig with spec being 59+/- 5psig m...
June 08, 2011
2006 Jeep Grand Cherokee Laredo 3.7L MIL Lamp on VIN: 1J4GR48K46
P0171: Fuel System Lean (Bank 1). ... Cherokee w/3.7. This jeep came in here with the MIL on and a p0171&174 were pulled. I smoked the intake and exhaust and of course found nothing. Checked the fuel pressure it was at 52-53 psig with spec being 59+/- 5psig m...
June 09, 2011
2000 Toyota Corolla LE 1.8L MIL Lamp on VIN: 1NXBR12E5Y
P0171: Fuel System Too Lean (Bank 1). ... has a p0171 lean and its running always on +22 fuel trims i replace maf sensor and clean fuel injectors, ..im checking fuel pump performance i have 3-4 amps average with a good wave pattern, but im not sure if that is right does anybody knows the amperage ...
June 20, 2011
2003 GMC Envoy SLE 4.2L Hesitation, Stall, MIL Lamp on, Runs lean VIN: IGKDT13S53
P0171: Fuel System Lean (Bank 1). This vehicle has no amss airflow - it calculates this figure. Calculations are off. At wide open throttle rpms won't go over 4000 and this only after warmed up. At 4000 rpm wot, airflow is calculated at 40 grams per second. Should be more like a hundred +. How...
June 21, 2011
2004 Kia Rio 1.6L MIL Lamp on VIN: KNADC12524
P0171: Fuel System Too Lean. ... p0171,p0121,and p1166. This car previously had the throttle screw trampered with as well as a vacuum leak (purge hose left off) I cant find a vacuum leak,the pcv hoses are installed correctly,it has a new MAF sensor,fuel pres was checked at idle last time ...
June 24, 2011
2004 Chrysler Sebring 2.7L No Start VIN: 1C3EL55R04
P0171: Fuel System Lean (Bank 1). Car has spark, Starts and runs on starting fluid. changed out fuel pump. Can not communicate with computer with snap on scanner. can pull codes with code reader only. Cant get to injectors to check, but am guessing no inj pulse. Changed relays arround.
June 27, 2011
2001 Volkswagen Cabrio GL 2.0L MIL Lamp on VIN: 3VWCC21VX1
P0171: Bank 1 too lean. ... code's P0341,P1473,P0171,P1225,P1226,P1227,P1228,P1451,P1421. Found Vac line cut by belt replaced it cleared codes car's Idle is good but the code for leak pump come's rite up removed pump tested pump is cool found TSB on fuel pump relay upgrade fo...
June 27, 2011
2003 Pontiac Montana 3.4L MIL Lamp on VIN: 1GMDU23E83
P0171: Fuel Trim System Lean (Bank 1). ... light on. P0171 stored along with an oil pressure switch code (can't remember the code)Tested for vac. leaks none found. Oxygen sensors read normal. Reset fuel trim and LT trim numbers begin to climb to 20% right away.
June 28, 2011
2001 Volkswagen Cabrio GL 2.0L MIL Lamp on VIN: 3VWCC21VX1
P0171: Bank 1 too lean. ... code's P0341,P1473,P0171,P1225,P1226,P1227,P1228,P1451,P1421. Found Vac line cut by belt replaced it cleared codes car's Idle is good but the code for leak pump come's rite up removed pump tested pump is cool found TSB on fuel pump relay upgrade fo...
June 28, 2011
2000 Mitsubishi Montero Sport LS 3.0L No Start, Poor Idle Quality, Surge, Cuts out, Stall VIN: JA4MT31H1Y
P0171: system lean. Hey all need some help with this montero sport. it arrive at our door with the check engine light on and the air mass meter disconnected . it runs pretty good with the air mass meter disconnected. but has a code for air mass meter .when we connected it back th...
June 02, 2011
2000 Toyota Celica GT 1.8L MIL Lamp on VIN: JTDDR32T4Y
P0171: Fuel System Too Lean (Bank 1). ... problem(hate this car).Anyway have Code p0441.Have replaced carbon canister due to being common problem.Cleared code and returned.Replaced vsv on air cleaner after testing found occasnilly not energizing with jumper wire to battery.Replaced and sent out.Ca...
June 02, 2011
2006 Jeep Grand Cherokee Laredo 3.7L MIL Lamp on VIN: 1J4GR48K46
P0171: Fuel System Lean (Bank 1). ... Cherokee w/3.7. This jeep came in here with the MIL on and a p0171&174 were pulled. I smoked the intake and exhaust and of course found nothing. Checked the fuel pressure it was at 52-53 psig with spec being 59+/- 5psig m...
June 08, 2011
2006 Jeep Grand Cherokee Laredo 3.7L MIL Lamp on VIN: 1J4GR48K46
P0171: Fuel System Lean (Bank 1). ... Cherokee w/3.7. This jeep came in here with the MIL on and a p0171&174 were pulled. I smoked the intake and exhaust and of course found nothing. Checked the fuel pressure it was at 52-53 psig with spec being 59+/- 5psig m...
June 09, 2011
2000 Toyota Corolla LE 1.8L MIL Lamp on VIN: 1NXBR12E5Y
P0171: Fuel System Too Lean (Bank 1). ... has a p0171 lean and its running always on +22 fuel trims i replace maf sensor and clean fuel injectors, ..im checking fuel pump performance i have 3-4 amps average with a good wave pattern, but im not sure if that is right does anybody knows the amperage ...
June 20, 2011
2003 GMC Envoy SLE 4.2L Hesitation, Stall, MIL Lamp on, Runs lean VIN: IGKDT13S53
P0171: Fuel System Lean (Bank 1). This vehicle has no amss airflow - it calculates this figure. Calculations are off. At wide open throttle rpms won't go over 4000 and this only after warmed up. At 4000 rpm wot, airflow is calculated at 40 grams per second. Should be more like a hundred +. How...
June 21, 2011
2004 Kia Rio 1.6L MIL Lamp on VIN: KNADC12524
P0171: Fuel System Too Lean. ... p0171,p0121,and p1166. This car previously had the throttle screw trampered with as well as a vacuum leak (purge hose left off) I cant find a vacuum leak,the pcv hoses are installed correctly,it has a new MAF sensor,fuel pres was checked at idle last time ...
June 24, 2011
2004 Chrysler Sebring 2.7L No Start VIN: 1C3EL55R04
P0171: Fuel System Lean (Bank 1). Car has spark, Starts and runs on starting fluid. changed out fuel pump. Can not communicate with computer with snap on scanner. can pull codes with code reader only. Cant get to injectors to check, but am guessing no inj pulse. Changed relays arround.
June 27, 2011
2001 Volkswagen Cabrio GL 2.0L MIL Lamp on VIN: 3VWCC21VX1
P0171: Bank 1 too lean. ... code's P0341,P1473,P0171,P1225,P1226,P1227,P1228,P1451,P1421. Found Vac line cut by belt replaced it cleared codes car's Idle is good but the code for leak pump come's rite up removed pump tested pump is cool found TSB on fuel pump relay upgrade fo...
June 27, 2011
2003 Pontiac Montana 3.4L MIL Lamp on VIN: 1GMDU23E83
P0171: Fuel Trim System Lean (Bank 1). ... light on. P0171 stored along with an oil pressure switch code (can't remember the code)Tested for vac. leaks none found. Oxygen sensors read normal. Reset fuel trim and LT trim numbers begin to climb to 20% right away.
June 28, 2011
2001 Volkswagen Cabrio GL 2.0L MIL Lamp on VIN: 3VWCC21VX1
P0171: Bank 1 too lean. ... code's P0341,P1473,P0171,P1225,P1226,P1227,P1228,P1451,P1421. Found Vac line cut by belt replaced it cleared codes car's Idle is good but the code for leak pump come's rite up removed pump tested pump is cool found TSB on fuel pump relay upgrade fo...
June 28, 2011