How to fix P0172 code in Toyota Camry?

[DeBrooke]

Toyota Camry P0172 solution introduction: The oxygen sensor of the engine needs to be replaced, along with the engine's ignition coils and spark plugs. Clean the engine's intake and exhaust systems. Clean the vehicle's evaporative emission system. Inspect and replace the mass airflow sensor if necessary. Clean the fuel injectors and fuel lines, and replace the fuel filter. Replace the engine's crankcase ventilation system and clean the throttle body. Below is an introduction to the function of oxygen sensors: 1. The front oxygen sensor detects the oxygen concentration in the engine's exhaust gases and transmits this information as an electrical signal to the ECU. The ECU then uses this oxygen concentration data to adjust the air-fuel ratio through feedback control. 2. The rear oxygen sensor primarily detects the oxygen concentration in the exhaust gases after they have been treated by the catalytic converter. If the oxygen concentration data from the front and rear oxygen sensors are the same, it indicates that the catalytic converter has failed.