2002 Toyota Camry P0171/P0174 codes

Asked by Wayne Jul 02, 2021 at 08:23 AM about the 2002 Toyota Camry XLE V6

Question type: Maintenance & Repair

have a 2002 Toyota Camry. I am getting obd2 error
codes P0171 and P0174. I have replaced the spark
plugs, mass airflow sensor, pcv valve, ignition coil
packs, and cracked oil filler cap. I am going to
replace fuel injectors and valve cover gasket next.
Last step will be O2 sensors, anyone have any
other suggestions. SomThanks

2 Answers
4,390

lincolnscott49 answered 3 years ago

If your computer logged both P0171 and P0174 codes, concentrate on those components affecting all cylinders, like a MAF sensor, a clogged fuel filter, or issues with a fuel pressure regulator. Otherwise, concentrate on the side of the engine represented by your diagnostic trouble code.

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