P0171 Diagnostic Trouble Code Discussion for May 2026
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 | |
| 2021 Nissan Rogue Sport S 2.0L MIL Lamp on VIN: 5N1BT3AA5N P0171: Lean B1. ... another one. First off this vehicle is a 2022 rogue with a 1.5 liter 3 cylinder turbo. System only goes to 2021. Car came in with P0171. Smoke tested found missing o-ring on pcv valve. Replaced no improvement. Scanned data found alpha 109 A/F sen1 2.21... |
May 06, 2026 |
