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P0171 Diagnostic Trouble Code Discussion for September 2007

Fuel System Lean (Bank 1)


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Trouble Ticket Help Requests for DTC P0171
Help Request Posted
2002 Ford F-150 King Ranch 4.6L Misfire VIN: 1FTRX17W32
P0171: system lean bank 1. truck has cylinders 1-4-6-7 not working checked the folowing spark injector pulse compression swapped injectors replaced maf sensor checked for vaccum leaks none found with smoke machine replaced fuel filter cannot understand why this problem is their does not...
September 01, 2007
2000 Honda Civic EX 1.6L No Start, MIL Lamp on, LOSS OF INJECTOR SIG VIN: 1HGEJ8147Y
P0171: Fuel System Too Lean. ... injector signal. the vehicle has plenty of fuel pressure and good spark. the vehicle runs at times and not at other times after sitting. the main relay is new and the computer appears to be operating properly. the engine light comes on after warming up and...
September 03, 2007
2002 Ford F-150 King Ranch 4.6L Misfire VIN: 1FTRX17W32
P0171: system lean bank 1. truck has cylinders 1-4-6-7 not working checked the folowing spark injector pulse compression swapped injectors replaced maf sensor checked for vaccum leaks none found with smoke machine replaced fuel filter cannot understand why this problem is their does not...
September 04, 2007
1998 Mercury Mystique GS 2.0L Hesitation, Surge, MIL Lamp on VIN: 1MEFM6530W
P0171: Lean. Once again, the blue oval has kicked me in the teeth. This car has a seriously lean condition, verifyed by 3 codes (listed) and also confirmed by the performance and low 02 volts. Road tested with fuel pressure guage visible on windsheild and found pressure we...
September 05, 2007
1998 Volvo S70 2.4L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall VIN: YV1LS5549W
P0171: lean condition. need help on this on. car will intermittently load up. will stall with lack of power when this occurs. starts back up. have caught problem in bay at idle. tail pipe test reveiled lambda@ 0.76, lab scope test ,o2 sensor @ 1.0v, maf @ 1.ov, coolant @ 200f, evap ...
September 05, 2007
2003 Ford Taurus SE 3.0L MIL Lamp on VIN: 1FAFP53233
P0171: System too lean - Bank 1. ... and P0174 in memory. Checked scan data and found (after re-seting codes)that LTFT jumped immediately to +26%, while STFT was around +5 -+7%. In my experience, it usually takes LTFT a longer period of time to move that high after clearing codes. Checked for...
September 06, 2007
2002 Buick LeSabre Custom 3.8L MIL Lamp on VIN: 1G4HP54KX2
P0171: Fuel Trim System Lean. ... and codes p0171 lean, and p0131 O2 sensor voltage low. Found severe dirt on MAF wire and very dirty air filter. Changed air and fuel filters and cleaned MAF wire. Car now has plenty of power, so I clear codes and let it go. One week later, MIL on again wit...
September 11, 2007
2000 Ford E-250 Econoline 5.4L Lean VIN: 1FTNE24L9Y
P0171: Lean Exhaust Bank 1. Checked this vehicle for fault codes using IDS & for any software updates. We have had this condition for about a year and cannot find the root cause for the lean condition of bank1 & bank 2 will eventually set. We had a misfire in cylinder 3 replaced ...
September 19, 2007
1999 Chevrolet Blazer 4.3L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GNDT13WXX
P0171: Fuel System Lean (Bank 1). hey guy me again i want to thank you all again for all the help and info it worked wonders lets say i am now a gm man not all that complex rpo and vin codes i recomend learning it helps alot anyways i need to find out how to clean the intake on the blazer quic...
September 21, 2007
2004 Ford F-150 Lariat 5.4L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1FTPX12514
P0171: bank 1 lean. ... the new 5.4 3 valve eng.did not know about plug problem until after purchase. did not miss or ses on test drive. on the way home (60 miles)when i came to steep grade began missing bad as long as in overdrive. it would shift back to 3rd no miss. i could mak...
September 22, 2007
1996 Ford Windstar GL 3.8L MIL Lamp on VIN: 2FMDA5140T
P0171: system to lean bank 1. can some one help me
September 26, 2007
2004 Ford F-150 Lariat 5.4L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1FTPX12514
P0171: bank 1 lean. ... the new 5.4 3 valve eng.did not know about plug problem until after purchase. did not miss or ses on test drive. on the way home (60 miles)when i came to steep grade began missing bad as long as in overdrive. it would shift back to 3rd no miss. i could mak...
September 27, 2007
2002 Kia Spectra 1.8L Poor Fuel Economy, MIL Lamp on VIN: KNAFB12102
P0171: Fuel System Too Lean (Bank 1). ... alignment and I noticed the mil light on. We performed an alignment and sent him on his way letting him know our diagnostic charge. Less than an hour later he brought it back in to have his light looked at. We then got the autozone story of their free diag...
September 27, 2007