Jan 5, 2013 · RX - 2nd Gen (2004-2009) - FINALLY SOLVED! P0171 and P0174 Codes!!!! - P0171 and P0174 I know this is long, but if you've had these codes, please read the entire …

Oct 10, 2018 · P0171 Definition The P0171 code means that, on the first bank of the engine, the fuel system is running weak (or lean) or a vacuum leak exists near this side of the engine. A …

Nov 19, 2018 · The P0171 code means that, on the second bank of the engine, the fuel system is running weak (or lean) or a vacuum leak exists near this side of the engine. A lean condition …

Dec 30, 2016 · Engine DTC Chart PDF A chart that details diagnostic trouble codes (DTCs) for a 2002 Lexus LS430. The chart lists various codes associated with engine performance and …

Jan 30, 2012 · A technical documentation that outlines diagnostic trouble codes (DTC) related to fuel system imbalances in vehicles, specifically for 'System too Lean' or 'System too Rich' …

Nov 4, 2025 · ES - 1st to 4th Gen (1990-2006) - Forum discussion, how-to guides, and technical help for the Lexus ES300, ES330, and ES250.

IS - 2nd Gen (2006-2013) - Pull codes P0172/P0175, need help diagnoising - My check engine light, VSC, and traction light all lit up yesterday. I pulled the codes and got P0172 and P0175 …

Nov 28, 2017 · P0171 PDF A documentation that provides detailed diagnostic procedures for detecting and addressing system fuel issues in vehicles. The document covers DTC codes …

Nov 5, 2025 · Hybrid Technology - Bought a high mileage rx400h really cheap but with issues - I don't know if I got a good deal or not but I just bought a 252k miles 2006 Lexus RX400h with a …

Oct 9, 2025 · ES - 1st to 4th Gen (1990-2006) - Smoke from cylinder 2 during smike test to find vacuum leak - Hello, I have 4 codes (p0171, p0174, p0442 & p0445). I changed all bad …