P0171 Diagnostic Trouble Code Discussion for August 2020
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 2009 Ford Explorer XLT 4.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FMEU73E49 P0171: System too lean bank 1. Vehicle runs very well until it intermittently drops current to #2 fuel injector as witnessed on scope in failure mode. Also confirmed by drop off of injector clicking sound using stethoscope when in failure mode. Connector plug has no corrosion, wiring/ha... |
August 05, 2020 | |
| 2007 Subaru Outback R L.L. Bean Edition 3.0L Poor Idle Quality VIN: 4S4BP84CX7 P0171: Fuel System Too Lean (Bank 1). This subaru came whit 2 code p0171 and p0172 and the car is running really bad no power hard to start bad idle hesitation on the road .i have cleaned the mass air flow sensor i have unplugged the exhaust on boot side i have 45-50 lbs of fuel pressure stead... |
August 10, 2020 | |
| 2007 Subaru Outback R L.L. Bean Edition 3.0L Poor Idle Quality VIN: 4S4BP84CX7 P0171: Fuel System Too Lean (Bank 1). This subaru came whit 2 code p0171 and p0172 and the car is running really bad no power hard to start bad idle hesitation on the road .i have cleaned the mass air flow sensor i have unplugged the exhaust on boot side i have 45-50 lbs of fuel pressure stead... |
August 12, 2020 |
