P0171 Diagnostic Trouble Code Discussion for July 2015
Fuel System Lean (Bank 1)
Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.Trouble Ticket Help Requests for DTC P0171
| Help Request | Posted | |
| 2003 Toyota Camry LE 3.0L Hesitation, Misfire, MIL Lamp on VIN: 4T1BF32K23 P0171: Fuel System Too Lean (Bank 1). Customer stated that cylinder 1,3,and 5 all had carbon foul on the plug. Vehicle came in for check engine light on flashing while driving; and had no power most of the time. Scan and found all the code above. Clear and code does not appear to come back but whe... |
July 16, 2015 | |
| 1998 Chevrolet C3500 Silverado 5.7L Hesitation, Surge, MIL Lamp on P0171: Fuel Trim System Lean (Bank 1). I have received a 1998 c3500 pick up 5.7 vortec. Codes from vech were po171 po174 freeze frame was at around 30 mph light load. I tested fuel pressure at idle 55 psi, wot 61 psi, and koeo 60 psi. I have smoked the intake and found no leaks , i have also spraye... |
July 20, 2015 | |
| 1998 Chevrolet C3500 Silverado 5.7L Hesitation, Surge, MIL Lamp on P0171: Fuel Trim System Lean (Bank 1). I have received a 1998 c3500 pick up 5.7 vortec. Codes from vech were po171 po174 freeze frame was at around 30 mph light load. I tested fuel pressure at idle 55 psi, wot 61 psi, and koeo 60 psi. I have smoked the intake and found no leaks , i have also spraye... |
July 21, 2015 | |
| 2004 GMC Sierra 1500 SLE 5.3L Excessive Emissions, Poor Idle Quality VIN: 2GTEK19T44 P0171: Fuel Trim System Lean (Bank 1). Truck came in with no reverse. I drove it into the shop and had a tech replace the trans. Since then the truck will barely idle once in closed loop. Fuel trims go to +55 upstream O2's read 0 MV and down stream are at 950 MV. I tried a known good MAF and a MAP ... |
July 22, 2015 | |
| 2003 Jeep Liberty Sport 3.7L Hesitation, Misfire, MIL Lamp on VIN: 1J4GL48K63 P0171: Fuel System Lean (Bank 1). Ok here goes . This Jeep has misfires on the same bank as well as lean codes . The truck runs ok except a very slight hesitation on take off. The LT fuel trim is right at 32+ on both banks . If I clear the memory the fuel trim climbs right back up within a few... |
July 28, 2015 |
