How often should the car's carbon canister solenoid valve be replaced?

[DelRyder]

There is no fixed replacement interval for the car's carbon canister solenoid valve. You can measure the resistance of the carbon canister solenoid valve, and replace it if the value does not match. Measure the power supply voltage of the carbon canister solenoid valve by unplugging the solenoid valve connector and using a voltmeter to measure the voltage. When the ignition switch is turned on, the power supply voltage should be 12V. If there is any abnormality, replace it. The carbon canister solenoid valve determines whether to open or close based on the concentration of fuel vapor coming from the fuel tank. When the concentration reaches a certain level, the negative pressure generated by the engine operation will draw it away, replacing part of the combustible mixture to participate in the engine operation, achieving fuel economy.