code p0171
code p0171
anyone have experience with this code: p0171?..truck runs fine she just turned 100,000m...something about running on the lean side..
- Retired BLM Rig
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- Model Year: 2008
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Re: code p0171
The P0171 code means that on the drivers side bank of the engine (bank #1), the fuel system is running weak or a vacuum leak exists. A lean condition occurs when the engine either receives too little fuel or too much air. Since it's lean only on one bank and not both, I would suspect a vacuum leak rather than starving for fuel. Probably a leaking intake manifold gasket, but would need more testing to confirm. Find a shop around you that has a smoke machine for finding vacuum leaks.
Good luck!
Good luck!
2008 Quad Cab - Stock RTI = 655, curb weight = 6081 lbs. Abel Components Plug & Play Locker Bypass®, Abel Components Full SmartBar Bypass®, Abel Components Nanny Kill Switch®, 2000 Watt ProMariner TruePower Plus Pure Sine Wave Inverter, Trailer Hitch Storage, MOLLE Door Panels, Wilton Hitch Vice, Locking Under Seat Storage Drawer, Smittybilt 2781 Air Compressor, 14K PullPal, Hi-Lift First Responder Jack, 25' Jumper Cable System, Slip Yoke Eliminator in a Can, Evolution vs. God, Share the Umbrella, Make sure you're right with God before you meet him!
Re: code p0171
also possible aging (lazy) upstream o2 sensor.
Re: code p0171
picked up the truck from dealer..had airbag recall...no engine light....they found a p1684 code low voltage..rain the day the p0171 code came on while idling in the driveway..going deer hunting this wknd..hope nothing lights up