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 condition occurs when the engine either receives too little fuel or too much air.
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 EXACTLY what and why which will be important to tell the mechanice you work with. If you want to know the solution, simply scroll...
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 few exceptions.
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 issues, such as oxygen sensor faults, camshaft position problems, and coolant temperature sensor errors. Each entry includes the DTC number, a brief description of the fault, and potential areas for troubleshooting ...
RX - 1st Gen (1999-2003) - error codes p0171 ,p0300,p0301,p0302,p0303 - check engine light popped on these codes came up ;P0171, followed by pending codes p0300 ...
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 across two engine banks.
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 check engine light and check hybrid/vsc warnings. It turns out the air intake boot got a crack that's why there's a lean code (p0171 and...
RX Models -Unique topics related to the 2023 up RX model hybrid drivetrain and other features/options found only on the hybrid models. Please use the main forum for discussion about shared components with other fifth generation RX models.
MAF Testing - Pages from RX300 Repair Manual PDF A set of technical diagrams that illustrate the testing of a Mass Airflow (MAF) Sensor for an RX300 vehicle. The diagrams show the connections and usage of an ohmmeter and voltmeter to measure resistances and voltages across the MAF sensor terminals, specifically THA, E2, VG, and E2G. Instructions accompany these diagrams, guiding the user on ...
