P0171 Diagnostic Trouble Code Discussion for February 2016
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 2012 GMC Sierra 3500 HD SLE 6.0L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1GT423CG8C P0171: too lean bank 1. ... Customer brought truck to us after they had replaced the engine themselves and now it runs poorly. customer stated that after the USED engine was installed all was good other then lean codes p0171 and p0174 setting. after s... |
February 05, 2016 | |
| 2012 GMC Sierra 3500 HD SLE 6.0L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1GT423CG8C P0171: too lean bank 1. ... Customer brought truck to us after they had replaced the engine themselves and now it runs poorly. customer stated that after the USED engine was installed all was good other then lean codes p0171 and p0174 setting. after s... |
February 08, 2016 | |
| 2003 Volkswagen Beetle Turbo S 1.8L Poor Idle Quality, MIL Lamp on VIN: 3VWFE21C13 P0171: lean bank 1. I have this 2003 new beetle 1.8 turbo, it runs fine on the highway. 12 to 1800 rpms at idle. very lean at idle 25% short trim and 25% long trim. pinching the pcv hose helped a lot. replaced pcv valve assy,and new vacuum tee at intake manifold. this did not cha... |
February 08, 2016 | |
| 1997 Chevrolet C1500 Suburban 5.7L MIL Lamp on VIN: 3GNEC16R5V P0171: Fuel Trim System Lean (Bank 1). Hi to all tech, five month ago replaced the spider injectors with the fuel pressure for open injector, the fuel pump was not holding pressure for the prime KOEO but good enough to keep the suburban running, now I had replaced the fuel pump and the pressure wit... |
February 11, 2016 | |
| 2008 Lexus LS460 4.6L MIL Lamp on VIN: JTHBL46F58 P0171: System Too Lean Bank 1. ... smell. Found out the code P0171 and the gas was leaking from the high pressure fuel pump on bank 1. We replaced the seals on the pumps (we did both banks) and clear the code. Driven for some distance and the light did no... |
February 12, 2016 | |
| 2001 Mazda MPV DX 2.5L MIL Lamp on VIN: JM3LW28YX1 P0171: Adaptive Fuel Trim Too Lean (Bank 1). This vehicle came in with severe misfire condition. Found secondary ignition issue and replaced coil pack, wires and plugs. This eliminated the misfire condition but I always check for lean running when coils fail. Sure enough, both banks running very lean and... |
February 12, 2016 | |
| 1998 Cadillac Seville SLS 4.6L EGR Decel test VIN: 1G6KS54Y2W P0171: Fuel Trim System Lean (Bank 1). ... low mileage Caddy with a failed Indiana OBD 2 test. Only code on form was P0171 (Bank 1 lean), We scanned codes and found 6 codes, engine light on and all monitors run. We started with fuel pressure 40 psi at idle and smok... |
February 25, 2016 | |
| 2008 GMC Acadia SLT 3.6L Hesitation, Cuts out VIN: 1GKEV33778 P0171: System to lean bank 1. OK,Here the deal this one is killing me!!! The customer is crying.. For other shops have know ideas,including customer friend that works at dealership. I will make this as short as possible with as much info as possible.Came in with codes listed.Opened air cle... |
February 27, 2016 | |
| 2006 Volkswagen Beetle 2.5 2.5L MIL Lamp on VIN: 3VWRW31C26 P0171: Fuel trim bank 1 system too lean. ... [...] accident happen a years ago. Now we only dealing with P0171 & P0101 only. We replace mass sensor, pipe, valve cover & harness connector. Smoke pressure test intake - no leak... |
February 27, 2016 | |
| 2006 Pontiac G6 3.5L MIL Lamp on VIN: 1G2ZG55826 P0171: Fuel System Lean (Bank 1). ... light on and lean on both banks. I checked the fuel pressure and the fuel delivery and found no problem. I also checked the fuel quality with no problems found. Next I smoke tested the intake both cold and at operating temperature and both test passed. Nex... |
February 29, 2016 |
