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P0171 Diagnostic Trouble Code Discussion for August 2008

Fuel System Lean (Bank 1)


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Trouble Ticket Help Requests for DTC P0171
Help Request Posted
1996 Ford Taurus LX 3.0L MIL Lamp on VIN: 1FALP53S7T
P0171: system lean bank 1. Ok, this car came in with an overheat problem as the primary concern so we fixed that and recommended some other things such as diag the check engine light and find an exhaust leak. So I started with the check engine light. Went through all the normal checks a...
August 01, 2008
2000 Ford Excursion XLT 5.4L Hesitation, Surge, MIL Lamp on VIN: 1FMNU41L4Y
P0171: system too lean - B1. ... of power complaint on heavy acceleration. (almost feels like a restricted exhaust system). Also complaint of excessive pinging on light acceleration. Had 2 lean running codes - P0171 & P0174. Replaced air & fuel ...
August 02, 2008
1998 Honda Accord LX 2.3L MIL Lamp on VIN: 1HGCG5547W
P0171: Fuel System Too Lean (Bank 1). hello everyone , i have this honda accord that keeps setting a po171 system too lean . vehicle had several that were fixed . po171 keeps coming back . the vehicle has had the updated regulator put in already . has anyone seen this or any ideas on how to check ...
August 02, 2008
2001 Chevrolet Silverado 1500 4.8L Surge VIN: 2GCEC19V11
P0171: Fuel Trim System Lean (Bank 1). We have a surging 4.8 (looks alot like a 5.3) here that has a bad surging symptom. Fuel trims are high, smoked intake to no avail but replaced intake gaskets, cleaned throttle body and IAC, then replaced IAC to no avail. Fuel guage drops to empty erratically b...
August 04, 2008
2003 Mitsubishi Lancer Evolution 2.0L Hesitation, Cuts out VIN: JA3AH86F23
P0171: Fuel System Lean (Bank 1). ... boost, scanned system for codes p0171 fuel trim too lean. Smoke tested intake system, replaced waste gate solenoid valve & several hoses, no change in running condition. Smoke tested intercooler system no leaks found. checked O2 sensors ok, manifold va...
August 04, 2008
1998 Honda Accord LX 2.3L MIL Lamp on VIN: 1HGCG5547W
P0171: Fuel System Too Lean (Bank 1). hello everyone , i have this honda accord that keeps setting a po171 system too lean . vehicle had several that were fixed . po171 keeps coming back . the vehicle has had the updated regulator put in already . has anyone seen this or any ideas on how to check ...
August 05, 2008
2001 Pontiac Firebird Formula 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2G2FV22G61
P0171: Fuel Trim System Lean (Bank 1). ... codes p0171, p0174, and p0306. cust had taken back to the place he bought it from many times and all they did was turn off the light and in the end told him he needed injectors. for cost sake he turned to the internet and purchased a set from who knows who...
August 05, 2008
2003 Ford Expedition XLT 5.4L Poor Idle Quality, MIL Lamp on VIN: 1MFRU15W53
P0171: lean bank. HI GUYS, I RECIEVED THIS TRUCK FROM ANOTHER SHOP. THEY SAID IT CAME IN WITH A CODE PO171 AND ROUGH IDLE. THEY FOUND FUEL FILTER HAD NEVER BEEN CHANGED. REPLACED IT AND CLEARED CODE AND CUSTOMER CAME BACK WITH LIGHT ON..THEN THEY BROUGHT THE TRUCK TO ME. HERE ...
August 06, 2008
2003 Mercury Sable LS 3.0L MIL Lamp on VIN: 1MEFM55S43
P0171: lean bank one. After replacing tps the car came in shortly for a lean code on both banks. I have removed all vacumm hoses and blocked every thing I can think of. I still have LTFT +25 @ idle and cruise. I replaced maf because i had 2.67 gps. No significant improvement, 2.89g...
August 06, 2008
2004 Subaru Forester XT 2.5L MIL Lamp on VIN: JF1SG69644
P0171: Fuel System Too Lean (Bank 1). ... little help from the subaru gurus.have this forester that has recurring p0171 lean code.engine appears to run fine at idle,and cruise.found no vaccum leaks.fuel pressure at idle was 38 psi regulated.utilized smoke machine to check for intake leaks,none wer...
August 06, 2008
1997 Lincoln Continental Spinmaker Edition 4.6L MIL Lamp on VIN: 1LNLM97V4V
P0171: Bank 1 Lean. ... V-8. Trouble codes P0171 and P0174 set (lean bank 1 and 2). I have found the problem, smoke tested intake and found both intake manifold runner controls leaking at the shafts. I have contacted Ford, and they say that the IMR...
August 07, 2008
1998 Acura TL 3.2L MIL Lamp on VIN: JH4UA3640W
P0171: Fuel System Too Lean (Bank 1). Hi: Vehicle in last week. P0171 and p0174 bank 1 and bank 2 lean. Repaired by other tech on my day off by cleaning top engine from suggestion of new svc mgr. Car coming back tomorrow (tue, aug 12th) for me to diag. I haven't done a thing to this but wanted so...
August 11, 2008
1998 Acura TL 3.2L MIL Lamp on VIN: JH4UA3640W
P0171: Fuel System Too Lean (Bank 1). Hi: Vehicle in last week. P0171 and p0174 bank 1 and bank 2 lean. Repaired by other tech on my day off by cleaning top engine from suggestion of new svc mgr. Car coming back tomorrow (tue, aug 12th) for me to diag. I haven't done a thing to this but wanted so...
August 13, 2008
2001 Nissan Pathfinder LE 3.5L Hesitation, Surge, Stall, Poor Fuel Economy, MIL Lamp on VIN: JN8DR09Y81
P0171: Fuel Trim Lean (Bank 1). ... thank you for reading the post. Customer brought in the vehicle with complaints about a hesitation on acceleration and slight pinging. MIL was on with code P0171 - with a lean running condition on Bank 1. Checked fuel pressure and monitored O2 sensors read...
August 22, 2008
1998 Pontiac Grand Prix GT 3.8L MIL Lamp on VIN: 1G2WP12K8W
P0171: Fuel System Lean (Bank 1). greetings to all I HAVE THIS PONTIAC SETTING A LEAN CODE I STARTED WITH BASIC CHECKS I CLEANED MASS AIR FLOW,SMOKED TESTED THE ENGINE TWICE,CHECKED FUEL PRESSURE AT IDLE 50 PSI AND I ALSO DROVE IT 40 MILES WITH NO FUEL PRESSURE DROP. THE O2 SENSOR IS SWITCHING...
August 25, 2008
2000 Ford Excursion XLT 5.4L Hesitation, Surge, MIL Lamp on VIN: 1FMNU41L4Y
P0171: system too lean - B1. ... of power complaint on heavy acceleration. (almost feels like a restricted exhaust system). Also complaint of excessive pinging on light acceleration. Had 2 lean running codes - P0171 & P0174. Replaced air & fuel ...
August 28, 2008