P0171 Diagnostic Trouble Code Discussion for January 2025
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 | |
| 2011 GMC Sierra 1500 SLT 5.3L Excessive Emissions, Poor Idle Quality, Runs rich until full VIN: 3GTP2WE38B P0171: Fuel trim lean bank 1. Vehicle runs excessively rich when cold. Fuel trims as high as plus 29 percent long term and plus 30 percent short term. Mass air running around 14 g/s and calculated air flow around 24 g/s Sometimes it will not idle down running up to around 3000 rpm. IAT... |
January 22, 2025 | |
| 2018 Dodge Durango GT 3.6L Poor Idle Quality, Misfire, MIL Lamp on, low power wide open VIN: 1C4RDJDG2J P0171: lean bank one. under normal driving conditions this vehicle runs normal with fuel trims that also are pretty normal. if allowed to idle for 10-20 seconds all cylinders on bank 2 misfire. the fuel trims are minus 10 on bank 2 and plus 27 on bank 1. when accelerating hard ... |
January 29, 2025 |
