What is the solution for the P0135 trouble code?

[Jeanette]

To resolve the P0135 trouble code, the method is to replace the oxygen sensor or disconnect its circuit. The working principle of the oxygen sensor: It uses a ceramic sensitive element to measure the oxygen potential in the heating furnace or exhaust pipe, calculates the corresponding oxygen concentration based on the chemical equilibrium principle, thereby monitoring and controlling the air-fuel ratio of combustion in the furnace to ensure product quality and compliance with exhaust emission standards. The oxygen sensor is installed both before and after the three-way catalytic converter. The one in front is called the front oxygen sensor, and the one at the back is called the rear oxygen sensor. The main function of the front oxygen sensor is to detect the oxygen content in the exhaust, allowing the ECU to adjust the air-fuel ratio based on the data from the front oxygen sensor. The main function of the rear oxygen sensor is to detect whether the three-way catalytic converter has failed.