P0171 Diagnostic Trouble Code Discussion for September 2017
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 2004 Ford Expedition Eddie Bauer 4.6L Poor Idle Quality, MIL Lamp on VIN: 1FMRU17W74 P0171: Lean Bank One. Have this Ford Expedition. Code P0171 Lean Bank 1 ONLY is the code it sets. I am out of patience and ideas. Fuel Trims, Short term are ok on both banks, bounce between -5 and +5. Long Term however are polar opposites. Bank 1 at +22 and Bank 2 at -18. Wont set ... |
September 13, 2017 | |
| 2004 Ford F-150 FX4 5.4L MIL Lamp on VIN: 1FTPX14504 P0171: Lean bank 1. ... lot. They said it was running fine when it was traded in and one of the owners drove the truck for a week and it was running fine until the battery died on them. After that it ran rough at idle and start up. Seemed to be clearing up and running ok after dr... |
September 19, 2017 | |
| 2004 Ford F-150 FX4 5.4L MIL Lamp on VIN: 1FTPX14504 P0171: Lean bank 1. ... lot. They said it was running fine when it was traded in and one of the owners drove the truck for a week and it was running fine until the battery died on them. After that it ran rough at idle and start up. Seemed to be clearing up and running ok after dr... |
September 21, 2017 |
