P0171 Diagnostic Trouble Code Discussion for January 2016
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 2010 Ford Mustang 4.0L MIL Lamp on VIN: 1ZVBP8AN1A P0171: bank 1 lean. ... with this Mustang. It sets a p0171 and p0174. LTFT go +24 and 25 and up. VE is only 53% Droped exhaust and had no change on VE. MAF reading are way low 105 gps at 4600 rpm 35gps at 1900 rpm with and without K & N air filter.Intake vacuum 20 in. at idle... |
January 08, 2016 | |
| 2007 Volvo S40 2.4i 2.4L MIL Lamp on VIN: YV1MS38277 P0171: Bank 1 System Lean. Happy New Year everyone. I think I know where I'm headed with this but I figured I'd get some other opinions. This car came in with lean condition code setting MIL. No excessive vacuum in crankcase (checked with gauge on dipstick tube), smoke tested intake and... |
January 11, 2016 | |
| 2006 Subaru Outback 2.5i 2.5L MIL Lamp on VIN: 4S4BP61C36 P0171: Fuel System Too Lean (Bank 1). Hello Techs. This 2006 Subaru outback came to us with a PO171 code in memory. The freeze frame shows closed loop, calculated load 75.2%, coolant temp 190F, STFT Bank 1 at 35.1% and LTFT Bank 1 at 7.8%. It also shows Map 23in/Hg, rpm 1703, speed 38 mph, timing... |
January 12, 2016 | |
| 2012 Chevrolet Traverse LT 3.6L MIL Lamp on VIN: 1GNKVJED8C P0171: Fuel System Lean. ... Traverse. After driving several miles and letting engine idle the Long Term Fuel Trims climb to 40% within about a minute and stay there for anywhere from 4 minutes to 12 minutes. Then within about a minute trims drop down to normal range and stay there. W... |
January 15, 2016 | |
| 2001 Ford F-150 Lariat 5.4L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1FTRX18L81 P0171: lean bank 1. I just wanted to share this fix with everyone on here as I used a lot of information to successfully diagnose this problem today and I am fairly new to iatn. I got this truck in a few days ago, customer dropped it off complaining about the truck running horrib... |
January 16, 2016 | |
| 2012 Chevrolet Impala LS 3.6L MIL Lamp on VIN: 2G1WF5E36C P0171: Bnk 1 lean. Returning lean codes post purge valve repair are proving difficult to prove out a cause. Intake gaskets are new, cannot find any vacuum leaks with smoke or carb cleaner. fuel trims are as follows: Idle bank 1 20, bank 2 30 2000 rpm bank 1 18, bank 2 27 cruisin... |
January 18, 2016 | |
| 2000 Ford F-150 Lariat 5.4L Poor Idle Quality, Stall, MIL Lamp on VIN: 1FTRX18L0Y P0171: lean bank 1. Runs excellent on test drive, cruises down the road and all readings are good, until you come to stop sign. o2's drop to zero along with fuel trims, long and short. then sets lean codes. will come out of it after getting speed back up. very intermittent. doesn... |
January 20, 2016 | |
| 2006 Chrysler Pacifica 3.5L MIL Lamp on VIN: 2A4GM48406 P0171: Fuel System Lean (Bank 1). ... some help, this week a customer bring his Chrysler Pacifica to our shop,, some other shop replace the engine, after replacing the engine the SES come on with P0171 lean code, so they installed a fuel pump, catalytic converter ( from Chrysler) oxygen sensor... |
January 22, 2016 | |
| 2005 Dodge Grand Caravan SXT 3.8L Misfire, MIL Lamp on VIN: 2D4GP44L35 P0171: Fuel System Lean (Bank 1). ... about 2 months. Van came in for cylinder 1 misfire. Only slightly rough at idle, and can see misfires counting on #1 slowly, about 10 to 15 misfires until counter resets to zero. Only other problem noticed was fuel trim was at +21%. Compression and running... |
January 22, 2016 | |
| 2009 BMW 335i xDrive 3.0L MIL Lamp on VIN: WBAPL335X9 P0171: System Lean - Bank 1. ... head-scratcher here, and any help is greatly appreciated. This is a twin-turbo vehicle that uses a single MAP sensor for speed density and intake air temp. This vehicle came in with a stored 29E0(p0171) - Bank 1 lean. Fuel trims are perfect until the vehic... |
January 26, 2016 | |
| 2004 Toyota Tacoma 2.4L Excessive Emissions, MIL Lamp on VIN: 5TENL42N44 P0171: Fuel System Too Lean (Bank 1). ... with light on. P0171 freeze frame indicates STFT 19.5% LTFT 28%. Tested front o2 and heater circuit within spec, no issues or short found in wirirng. Have not gotten to the ecu yet. Vehicle drives normal, no misfire, sl... |
January 27, 2016 | |
| 2004 BMW 330Ci 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: WBABD534X4 P0171: lean bank 1. lean misfire, stumble, pops through intake when vehicle first started up and then clears out. STFT and LTFT on both banks running very lean at idle and off idle. No excessive vacuum in crankcase. |
January 28, 2016 | |
| 2004 Toyota Tacoma 2.4L Excessive Emissions, MIL Lamp on VIN: 5TENL42N44 P0171: Fuel System Too Lean (Bank 1). ... with light on. P0171 freeze frame indicates STFT 19.5% LTFT 28%. Tested front o2 and heater circuit within spec, no issues or short found in wirirng. Have not gotten to the ecu yet. Vehicle drives normal, no misfire, sl... |
January 29, 2016 | |
| 2002 Ford F-150 XL 4.2L MIL Lamp on VIN: 1FTRX17262 P0171: Lean bank 1. ... with bank 1 and 2 lean codes (P0171, P0174). fuel trims showed capped at 33.3% on stft and 0% on ltft. did smoke test and found that the egr was leaking internally and the IMRC rod seals where leaking. recommended intake... |
January 30, 2016 | |
| 2003 Toyota Corolla CE 1.8L MIL Lamp on VIN: JTDBR32E23 P0171: Fuel System Too Lean (Bank 1). I am second tech to look at this vehicle. It came in with a leaking intake plenum gasket (determined with smoke machine), which was replaced. After clearing and returning to customer it returned with a po171. Upon inspection the first tech demed the B1s1 to be... |
January 30, 2016 | |
| 2003 Toyota Corolla CE 1.8L MIL Lamp on VIN: JTDBR32E23 P0171: Fuel System Too Lean (Bank 1). I am second tech to look at this vehicle. It came in with a leaking intake plenum gasket (determined with smoke machine), which was replaced. After clearing and returning to customer it returned with a po171. Upon inspection the first tech demed the B1s1 to be... |
January 31, 2016 |
