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P0171 Diagnostic Trouble Code Discussion for January 2022

Fuel System Lean (Bank 1)

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Trouble Ticket Help Requests for DTC P0171
Help Request Posted
1999 Lexus RX300 3.0L Hesitation, Cuts out, Misfire VIN: JT6HF10U4X
P0171: Bank 1 lean. Hey guys, hopefully this is a simple question for someone with more foreign car experience than me. Being in Michigan about 95 percent of all my customers have domestic vehicles. I am working on this 1999 Lexus RX300 with a 3.0 liter. If you start it cold ...
January 05, 2022
2012 Chevrolet Cruze LTZ 1.4L MIL Lamp on VIN: 1G1PH5SCXC
P0171: fuel system lean bank 1. Cruze came in with P0171, inspected intake manifold port, check valve was gone. Replaced intake with aftermarket part, replaced valve cover with new OEM part, cleared codes, road tested vehicle. P0171 returns, replaced crankcase hose from manifold to turbo...
January 12, 2022
2004 Honda Accord LX 2.4L MIL Lamp on VIN: JHMCM56364
P0171: Fuel System Too Lean (Bank 1). Customer complaint check engine light on, fuel trims high at idle. Verified complaint. Total fuel trims good above 1500 RPMS. As the engine gets hotter the fuel trims go from +15 up to +35 or higher. I used propane and brake cleaner to search for a leak. W...
January 25, 2022