1998 Lexus LS 400 "bank fuel rich system p0172" Questions

...Fuel System Too Rich (Bank 1).P0172 - System Too Rich (Bank 1) Essentially this DTC means that an oxygen sensor in bank 1 detected a rich condition. When the code says that the Fuel System is "too ...

...Fuel System Rich - Bank 1 - 700R4 https://www.700r4transmissionhq.com > p0172-hyunda... Nov 21, 2018 - Elantra P0172 Code Defined ... P0172 is thrown when the oxygen sensors detect that the air fuel ...

...in exhaust ) v6-v8 - v10 engines, bank 1 is the side of the engine that has # 1 cylinder. causes could be a vacuum leak in a hose, a dirty or bad maf sensor, or fuel pressure or delivery

...fuel trim is ok. ? copy and paste https://www.yourmechanic.com/article/p0172-obd-ii-trouble-code-system-too-rich-bank-1-by-blake-griffin ...

...fuel trim bank one too lean then p0172 fuel trim bank one too rich then p0174 fuel trim bank two too lean then p0175 fuel trim bank two too rich and for the last code is p0304 number 4 cylinder ...

...Bank 1 Possible causes Faulty front heated oxygen sensor Ignition misfiring Faulty fuel injectors Exhaust gas leaks Incorrect fuel pressure Faulty Mass Air Flow (MAF) sensor ...

...bank 1===causes --intake blocked (air filter) EVAP canister purge valve---fuel pressure---EGR system--injectors--HO2S (oxygen sensor). The first thing to check would be the oxygen sensor and air ...

...Fuel Trim, System too Rich, Bank 1 Possible Cause: Evaporation emission (EVAP) canister purge valve. Fuel pressure. Fuel Injector(s). Heated oxygen sensor (HO2S). Mass air flow sensor. Engine coolant ...

...bank 1 If upstream sensors are over 100,000 miles on any of your vehicles change them Leave the downsteam ones alone The 172 is rich ,so maybe you have a vacuum leak & lean condition & the ...

...are often present and sometimes no. fuel system too rich #P0172 (bank1) fuel system too rich #P0175 (bank 2) answers from code reader manualI would check fuel regulator and fuel pressure ...