Will the Check Engine Light Come On if the Throttle Body is Dirty?
1 Answers
The check engine light will come on if the throttle body is dirty. The throttle body is installed between the air filter and the engine intake valve, and the amount of air entering the engine is controlled by the engine computer adjusting the opening degree of the throttle body. In most cases, the check engine light is triggered by issues in the fuel emission system. When the light comes on, try starting and turning off the vehicle three times, then observe whether the light remains on. If it does, it is necessary to promptly visit a repair shop to check the fault codes to determine whether the issue lies with the engine or a sensor. If the light turns off, it might be a sporadic fault and does not require immediate inspection. When the computer receives parameters from the oxygen sensor indicating that the exhaust emissions severely exceed the national legal standards, and the internal program cannot adjust them back within the standard range, the engine control computer will illuminate the pollution emission warning light (a yellow pollution light) on the dashboard. This alerts the owner to visit a service station to check the cause of the engine pollution emission light. Poor engine combustion is the main reason for the check engine light to come on.
