P0171 Diagnostic Trouble Code Discussion for November 2025
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 2021 Ford F-350 Super Duty XL 7.3L Surge, MIL Lamp on VIN: 1FDRF3HN1N P0171: lean bank 1. ... provide. This 2022 f350(not sure why the vin did not match) came in with p0171/p0174. Long term fuel trims at 29% on both banks. Short term fuel trims roughly 8% at idle, varying with driving conditions/load/etc. MAF reads ... |
November 13, 2025 | |
| 2021 Ford F-350 Super Duty XL 7.3L Surge, MIL Lamp on VIN: 1FDRF3HN1N P0171: lean bank 1. ... insight you might be able to provide. This 2022 f350(not sure why the vin did not match) came in with p0171/p0174. Long term fuel trims at 29% on both banks. Short term fuel trims roughly 8% at idle, varying with driving conditions/load/etc. MAF reads ... |
November 14, 2025 |
