Apr 25, 2015 · 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 …

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 …

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.

Mar 15, 2014 · ES - 1st to 4th Gen (1990-2006) - 2001 Misfiring P0300, P0171, P0174 - Well here's a tricky one... I recently fixed the knock sensor errors by replacing the KS harness and sensors, so …

Apr 13, 2023 · IS F (2008-2014) - Stalling once at temp - P0171, P0174, P1170 - 2010 ISF throwing codes P0171, P0174 and P1170. Car starts and runs fine when cold. However once it warms up …

Dec 7, 2024 · ES - 1st to 4th Gen (1990-2006) - P0171 P0174 2003 Es300 - I just got P0171 P0174 again (2003 ES300 108k), I got the code a few months ago - replaced the mass airflow sensor.

Mar 31, 2011 · ES - 1st to 4th Gen (1990-2006) - 2000 ES 300, P0171 "system too lean" please help - I have a 2000 ES 300 with 162,xxx on the dash and about a month ago the check engine light and the …

Jul 16, 2022 · IS - 2nd Gen (2006-2013) - P0171 P0174 Solved - I recently got this 2008 IS250 AWD. I knew it would need some work, and one of the issues was that the CEL, VSC, and TRAC lights were …

Aug 10, 2009 · Maintenance - Error code P0171 - lean bank 1 - I received this error and changed the MAF sensor. The CEL and VSC Off light came on again shortly after but has not come on again in …

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 …