Will the car shake if the rear oxygen sensor is broken?

[HoldenFitz]

If the rear oxygen sensor is broken, the car may shake. When the oxygen sensor malfunctions, the car's computer cannot precisely control the fuel injection, leading to issues such as no fuel injection, excessive fuel injection, or insufficient fuel injection. As a result, the engine may run unevenly and shake, potentially damaging the engine's lifespan. The function of the rear oxygen sensor is to measure whether there is excess oxygen in the exhaust after engine combustion. It converts the oxygen content into a voltage signal and transmits it to the engine computer, enabling the engine to achieve closed-loop control based on the target air-fuel ratio. This ensures that the three-way catalytic converter maximizes the conversion efficiency of hydrocarbons, carbon monoxide, and nitrogen oxides in the exhaust, thereby optimizing the conversion and purification of emission pollutants.