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P0171 Diagnostic Trouble Code Discussion for September 2013

Fuel System Lean (Bank 1)


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Trouble Ticket Help Requests for DTC P0171
Help Request Posted
2008 BMW 328xi 3.0L MIL Lamp on VIN: WBAVC93538
P0171: lean bank 2. ... we have this used bmw with 3 p0174, p0171' p1415 codes cannot find a vacuum leak or tore intake boot thanks for any help
September 09, 2013
2006 Cadillac SRX 4.6L MIL Lamp on VIN: 1GYEE63A86
P0171: Fuel Trim System Lean (Bank 1). ... no vacum leaks. No running concerns noticed, running good. Only problem found at this time is baro readins out of range. At this altitude of 2400 ft baro should be 27 t0 28 {inhg} live data currently is 22.4 {inhg} replaced map sensor assly and data was co...
September 09, 2013
2006 Mini Cooper S 1.6L Hesitation, MIL Lamp on VIN: WMWRE33506
P0171: System Lean B1. Thanx for the help!
September 09, 2013
2011 Toyota RAV4 2.5L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 2T3BF4DV6B
P0171: lean condition. ... in with p0300, p0301,p302,p303 and p304. Cleared codes. 1st drive MIL flashes and engine misses, (excessive fuel/cataylst damaging condition)p0301 and p0171. watched fuel trims in the bay, they would swing from over +20%...
September 11, 2013
2002 Chevrolet Trailblazer LS 4.2L Cuts out, Stall, MIL Lamp on VIN: 1GNDT13S72
P0171: Fuel System Lean (Bank 1). Hey guys, I'm a little stumped here. This is the boss's trailblazer. It has stored codes for system too rich AND system too lean. I have it idling right now and STFT is -18, LTFT is +11, FT cell is +20. When I increase the rpms up to around 2000 or 3000 the fu...
September 13, 2013
2011 Toyota RAV4 2.5L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 2T3BF4DV6B
P0171: lean condition. ... in with p0300, p0301,p302,p303 and p304. Cleared codes. 1st drive MIL flashes and engine misses, (excessive fuel/cataylst damaging condition)p0301 and p0171. watched fuel trims in the bay, they would swing from over +20%...
September 13, 2013
1996 Dodge Neon 2.0L MIL Lamp on
P0171: Fuel System Lean (Bank 1). ... for code p0171, lean condition, it runs beautiful, has had a complete tune up, except for a fuel filter because there isn't one in its place is an accumulator. I have replaced the fuel pump assy, it had an exhaust manifold leak so I repaired it, the only r...
September 16, 2013
2001 Nissan Sentra GXE 1.8L Poor Idle Quality, Hesitation, lack of power VIN: 3N1CB51D91
P0171: Fuel Trim Lean (Bank 1). Hi. I'm attempting to help and elderly neighbor of mine on my day off. I tried to hook up my scan tool but the Genesis is not communicating. Her son said they took it to the Nissan dealership and they said it was the fuel pump. He said they wanted $1300 to fix...
September 16, 2013
2002 Toyota Camry LE 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 4T1BF32KX2
P0171: Fuel System Too Lean (Bank 1). Car starts up and runs a little rough but not terrible. After idle for about a minute runs a little better but not perfect. Car has low power when driving at all times. Do not feel a strong misfire. Sometimes will pop back through intake like running too lean....
September 17, 2013
2002 Toyota Camry LE 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 4T1BF32KX2
P0171: Fuel System Too Lean (Bank 1). Car starts up and runs a little rough but not terrible. After idle for about a minute runs a little better but not perfect. Car has low power when driving at all times. Do not feel a strong misfire. Sometimes will pop back through intake like running too lean....
September 18, 2013
2011 Chevrolet Silverado 2500 HD LT 6.0L MIL Lamp on VIN: 1GC1KXCG5B
So the story is the customer hit a deer and ever since then the engine light came on. Scan truck and found codes, thinking it was going to be cut and dry. I have tried a few things and would like some more ideas. Oh my fuel trims are crazy, short term was 12 o...
September 19, 2013
2001 Ford Explorer XLT 4.0L MIL Lamp on VIN: 1FMZU73E61
P0171: Bank 1 System Lean. This one is a doozie. 2001 Ford Explorer XLT 4.0L V6 (VIN E). Keeps setting lean codes for both banks. No vacuum leaks found with smoke tests, spark plugs and O2 sensor tips are grayish (indicates lean), exhaust has minimal back pressure, fuel pressure is 60 p...
September 23, 2013
2005 Hyundai Elantra GLS 2.0L MIL Lamp on VIN: KMHDN46D55
P0171: Fuel System Too Lean (Bank 1). This vehicle has a p0171 code. The freeze frame data showed the vehicle just off idle with about 1000 rpm, and the LTFT was 25%. Now with the vehicle idling warmed up the ltft is 25% and the stft is around 0 unless you barely move it off idle and it will go up...
September 25, 2013
2003 Saturn L200 2.2L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1G8JU54F43
P0171: Fuel Trim System Lean (Bank 1). no power, cooling fan comes on and off even though not hot.checked injector spray seems good, swept TPS no drop out . only wierd thing is ST trim is -16 at idle.intake sounds noisy like humming ? hope someone can give me a new idea... it's driving me crazy LOL
September 28, 2013
2008 BMW 328xi 3.0L MIL Lamp on VIN: WBAVC93538
P0171: lean bank 2. ... we have this used bmw with 3 p0174, p0171' p1415 codes cannot find a vacuum leak or tore intake boot thanks for any help
September 09, 2013
2006 Cadillac SRX 4.6L MIL Lamp on VIN: 1GYEE63A86
P0171: Fuel Trim System Lean (Bank 1). ... no vacum leaks. No running concerns noticed, running good. Only problem found at this time is baro readins out of range. At this altitude of 2400 ft baro should be 27 t0 28 {inhg} live data currently is 22.4 {inhg} replaced map sensor assly and data was co...
September 09, 2013
2006 Mini Cooper S 1.6L Hesitation, MIL Lamp on VIN: WMWRE33506
P0171: System Lean B1. Thanx for the help!
September 09, 2013
2011 Toyota RAV4 2.5L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 2T3BF4DV6B
P0171: lean condition. ... p304. Cleared codes. 1st drive MIL flashes and engine misses, (excessive fuel/cataylst damaging condition)p0301 and p0171. watched fuel trims in the bay, they would swing from over +20%...
September 11, 2013
2002 Chevrolet Trailblazer LS 4.2L Cuts out, Stall, MIL Lamp on VIN: 1GNDT13S72
P0171: Fuel System Lean (Bank 1). Hey guys, I'm a little stumped here. This is the boss's trailblazer. It has stored codes for system too rich AND system too lean. I have it idling right now and STFT is -18, LTFT is +11, FT cell is +20. When I increase the rpms up to around 2000 or 3000 the fu...
September 13, 2013
2011 Toyota RAV4 2.5L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 2T3BF4DV6B
P0171: lean condition. ... p304. Cleared codes. 1st drive MIL flashes and engine misses, (excessive fuel/cataylst damaging condition)p0301 and p0171. watched fuel trims in the bay, they would swing from over +20%...
September 13, 2013
1996 Dodge Neon 2.0L MIL Lamp on
P0171: Fuel System Lean (Bank 1). ... for code p0171, lean condition, it runs beautiful, has had a complete tune up, except for a fuel filter because there isn't one in its place is an accumulator. I have replaced the fuel pump assy, it had an exhaust manifold leak so I repaired it, the only r...
September 16, 2013
2001 Nissan Sentra GXE 1.8L Poor Idle Quality, Hesitation, lack of power VIN: 3N1CB51D91
P0171: Fuel Trim Lean. Hi. I'm attempting to help and elderly neighbor of mine on my day off. I tried to hook up my scan tool but the Genesis is not communicating. Her son said they took it to the Nissan dealership and they said it was the fuel pump. He said they wanted $1300 to fix...
September 16, 2013
2002 Toyota Camry LE 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 4T1BF32KX2
P0171: Fuel System Too Lean (Bank 1). Car starts up and runs a little rough but not terrible. After idle for about a minute runs a little better but not perfect. Car has low power when driving at all times. Do not feel a strong misfire. Sometimes will pop back through intake like running too lean....
September 17, 2013
2002 Toyota Camry LE 3.0L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 4T1BF32KX2
P0171: Fuel System Too Lean (Bank 1). Car starts up and runs a little rough but not terrible. After idle for about a minute runs a little better but not perfect. Car has low power when driving at all times. Do not feel a strong misfire. Sometimes will pop back through intake like running too lean....
September 18, 2013
2011 Chevrolet Silverado 2500 HD LT 6.0L MIL Lamp on VIN: 1GC1KXCG5B
So the story is the customer hit a deer and ever since then the engine light came on. Scan truck and found codes, thinking it was going to be cut and dry. I have tried a few things and would like some more ideas. Oh my fuel trims are crazy, short term was 12 o...
September 19, 2013
2001 Ford Explorer XLT 4.0L MIL Lamp on VIN: 1FMZU73E61
P0171: Bank 1 System Lean. This one is a doozie. 2001 Ford Explorer XLT 4.0L V6 (VIN E). Keeps setting lean codes for both banks. No vacuum leaks found with smoke tests, spark plugs and O2 sensor tips are grayish (indicates lean), exhaust has minimal back pressure, fuel pressure is 60 p...
September 23, 2013
2005 Hyundai Elantra GLS 2.0L MIL Lamp on VIN: KMHDN46D55
P0171: Fuel System Too Lean (Bank 1). This vehicle has a p0171 code. The freeze frame data showed the vehicle just off idle with about 1000 rpm, and the LTFT was 25%. Now with the vehicle idling warmed up the ltft is 25% and the stft is around 0 unless you barely move it off idle and it will go up...
September 25, 2013
2003 Saturn L200 2.2L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1G8JU54F43
P0171: Fuel Trim System Lean (Bank 1). no power, cooling fan comes on and off even though not hot.checked injector spray seems good, swept TPS no drop out . only wierd thing is ST trim is -16 at idle.intake sounds noisy like humming ? hope someone can give me a new idea... it's driving me crazy LOL
September 28, 2013