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 post as it will explain …

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 lean …

Nov 19, 2018 · Code P0171 applies to Bank 1 and P0174 applies to Bank 2. Code P0174 mainly applies to V6 or V8 engines because 4-cylinder engines generally have only one bank, though there are a …

Feb 12, 2018 · LS - 1st and 2nd Gen (1990-2000) - 98 Lexus LS 400 p0171 and cannot figure out fix - I have a 98 Lexus LS400 with the p0171 code. I have replaced the MAF sensor, all o2 sensors.

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' conditions …

Jan 12, 2026 · ES - 1st to 4th Gen (1990-2006) - Forum discussion, how-to guides, and technical help for the Lexus ES300, ES330, and ES250.

Feb 18, 2022 · A service bulletin addressing issues related to air-fuel ratio imbalance and cylinder misfire in specific Lexus models.

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 potential …

Read Lexus ES specs, maintenance schedules, and repair guides with photos and videos to help you maintain your Lexus.

If a malfunction code is displayed during the DTC check in the check mode, check the circuit for listed in the table below. For details of each code, refer to the ’’See page ’’ under the respective intheDTCchart.