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P0171 Diagnostic Trouble Code Discussion for October 2024

Fuel System Lean (Bank 1)


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Trouble Ticket Help Requests for DTC P0171
Help Request Posted
2006 Ford E-350 Super Duty 5.4L Poor Idle Quality, MIL Lamp on VIN: 1FDSE35L26
I am thinking the ECM is going out. I wonder what the MAF wiring should pinout on the signal wires... I have 3 MAF sensors, all read the same when installed. Two are Ford parts and one aftermarket. If you unplug the MAF the vehicle runs fine. Oxygen S1s...
October 01, 2024
2017 Chevrolet Express 3500 6.0L Hesitation, Surge, Misfire, MIL Lamp on VIN: 1GB0GRFG0H
P0171: System lean bank 12. ... hesitation with popping and check engine light on, with codes P0171-P0174 and P0300 random misfire.. Freeze frame data for P0171-0174 MPH 45 ECT 195 ambient temperature 60 short term fuel trim 1.0 long term fuel trim 14 fuel cell 45. Returnless fuel s...
October 25, 2024
2017 Chevrolet Express 3500 6.0L Hesitation, Surge, Misfire, MIL Lamp on VIN: 1GB0GRFG0H
P0171: System lean bank 12. ... engine light on, with codes P0171-P0174 and P0300 random misfire.. Freeze frame data for P0171-0174 MPH 45 ECT 195 ambient temperature 60 short term fuel trim 1.0 long term fuel trim 14 fuel cell 45. Returnless fuel s...
October 30, 2024