What Causes the Roewe Engine Emission Fault Light to Illuminate?

1 Answers
MacEmma
07/29/25 10:46pm
The reasons for the engine emission fault light illuminating are as follows: 1. Poor gasoline quality can lead to insufficient combustion of the air-fuel mixture in the cylinder, causing the pollution light to illuminate, and it can also easily lead to carbon deposits. 2. Carbon deposits in the intake tract or on the piston top can result in poor atomization, leading to incomplete combustion and the pollution light illuminating. 3. During cold starts, especially when the temperature drops sharply, the pollution light may illuminate due to the ECU's temperature correction. However, it will stabilize once the temperature drops to a certain level and remains steady. 4. Excessive engine mileage can weaken the spark plug's performance, leading to the pollution light illuminating.
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