What Causes the Exhaust Emission Indicator Light to Illuminate?

[LilahDella]

The illumination of the exhaust emission indicator light indicates a malfunction in the exhaust after-treatment system, resulting in excessive emissions. The exhaust emission control system indicator light will illuminate when the ignition is turned on and must turn off after the engine is started. If the light does not turn off after starting the engine or lights up or flashes while driving, it suggests unstable operation in the emission control system and excessive exhaust emissions. The vehicle can still operate normally at this time, but it is advisable to conduct an inspection and address the issue as soon as possible. Prolonged driving under these conditions may lead to further damage to components related to the exhaust emission control system and worsen exhaust emissions.