TechShop’s Tool Minute: DTCs P0171 and P0174
Grab your scan tool and let’s learn more about excess oxygen in the exhaust stream and P0171 and P0174 codes.
VIDEO: Diagnosing DTC P0171 System Too Lean
TechShop Managing Editor Eric Garbe discusses diagnostic trouble code P0171 System Too Lean Bank One.
Code Reader Podcast: P0171
The scan tool pulled a diagnostic trouble code of P0171: System Too Lean Bank 1.
The Humble Mechanic: Demystifying Code P0171 System Lean Fault
System lean is the perception by the ECM that there’s unmetered air coming through the engine. The Humble Mechanic says “perception” because that may or may not actually be the case…
Pulled a P0171 Code? Humble Mechanic Helps Explain It
Too much air or not enough fuel at the engine. System lean is not hard to diagnose, once you understand it.
Pulling Codes: Intermittent Misfire/Idle/Stall on Dodge Stratus, Codes P0300, P0303 and P0171
This month’s column comes to us from Bill Fulton. He takes us through a Pulling Codes case of a 2004 Dodge Stratus with intermittent misfire/idle/stall using his symptom-to-system diagnostic strategies.
New Airtex Vehicle Electronics Video Tackles Complex P0171 Challenge
The new seven-and-a-half-minute video, “P0171 Chevrolet Trailblazer Diagnostics,” explores the reasons for intermittent lean fuel conditions – and the resulting diagnostic trouble code – on a 2006 Trailblazer equipped with a 4.2-liter engine.
Honda Tech Tip: Rough Idle and/or DTCs P0171, P0174 or P1171
Select Honda vehicles may experience intermittent rough idle and/or the MIL is on with DTC P0171 (Fuel Trim System Lean Bank 1), P0174 (Fuel Trim System Lean Bank 2) or P1171 (Fuel Trim System Lean During Acceleration). If normal troubleshooting procedures haven’t resolved the problem, it may be caused by a cracked intake manifold gasket(s).
Software Focus: Efficient Diagnostics
Discover how to quickly retrieve codes, access exclusive repair information, and develop a strategic plan for optimal diagnostic results. This video is sponsored by Bosch.
Launch Tech X-431 Throttle Diagnostic Tool
The scan tool features an upgraded camera, wide coverage of vehicle models, strong diagnostic functions, accurate diagnostic data, comprehensive diagnostic reports, remote diagnostic reports, datastream playback displays I/M Readiness Status and more.