What Causes Persistent Oxygen Sensor Faults?

[AutumnRose]

There are several reasons that may lead to persistent oxygen sensor faults: 1. The quality of fuel added to the vehicle is too low, resulting in ineffective combustion in the engine cylinders and producing excessive harmful substances and impurities in the exhaust gases; 2. Spark plug failure: When there is an issue with the spark plugs, normal ignition cannot occur, leading to ineffective combustion of fuel and the air-fuel mixture in the engine cylinders, thereby generating excessive harmful substances and impurities that damage the oxygen sensor; 3. Catalytic converter failure: The catalytic converter converts toxic gases in the vehicle's exhaust into harmless substances through oxidation and reduction. If the catalytic converter malfunctions and fails to operate normally, the oxygen sensor will also be damaged accordingly.