What are the reasons for the engine warning light to illuminate?

1 Answers
DiValentina
07/29/25 5:52pm
Reasons for the engine warning light to illuminate: 1. Fault in the fuel emission system, when the computer receives parameters from the oxygen sensor indicating that the exhaust emissions significantly exceed national legal standards, and the internal program cannot adjust to the standard range; 2. Poor combustion state; 3. Engine knocking, car lacks power, excessive engine noise, with obvious piston slap sounds; 4. Poor fuel quality, unclean engine cylinders, with accumulated carbon deposits; 5. False faults may also report fault codes, but the engine operates normally, possibly due to an operation that exceeded the computer's control range, resulting in the computer reporting a fault code.
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