Empower Your Engine The Complete Guide to Engine Code P0171

p0171 code (lean bank 1) ... The O2 sensor only cuts in (closed loop with ECM) once the engine has warmed up and coolant temp has exceeded 158F/ ... p0171 is a lean code. The condition is detected by the oxygen sensor, which is analyzing exhaust fumes. The oxygen sensor reading has everything ... PCM & Fuel Systems - Engine Code P0171 - #P0171- According to the book it means System adaptive feul too lean (bank 1) . P0171 is for a lean mixture. The O2 sensor is detecting too much air/oxygen. This causes engine computer to open the injectors to stay open longer to add more ... The P0171 code means that the engine is running too lean on bank 1, which is the side of the engine that has cylinders 1-3. This can cause ... A dirty or faulty MAF sensor can send incorrect information to the ECM, causing the engine to run lean and trigger the P0171 code. Faulty Fuel ... the same lean code on both banks indicates it is a fault that affects the whole engine, so less likely to be an O2 sensor. I would take another ... The lean code P0171 is in most cases set due to eaither a vacuum leak in and around the intake and or in most cases if you dont have a vacuum leak, its usually ... It's very possible that you do have a vacuum leak. The only real way to find out is to get a hold of a scanner that you can monitor the O2< ... P0171 indicates that the oxygen sensor in bank 1 has detected a lean condition (the engine either receives too little fuel or too much air).

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