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What causes a car's powertrain system malfunction?

1 Answers

EverettLynn

07/29/25 6:15pm

Powertrain system malfunctions are often caused by fuel emission system issues. When the malfunction indicator light is on, start and turn off the vehicle three times consecutively, then observe whether the light remains illuminated. If it stays on, promptly visit a repair shop to check the fault codes to determine whether it's an engine problem or a sensor malfunction. If the light turns off, it may be an intermittent issue that doesn't require immediate inspection. Poor gasoline quality: Low-quality gasoline can lead to incomplete combustion of the air-fuel mixture in the cylinders, triggering the pollution warning light, and it also tends to cause carbon buildup. Carbon deposits on piston tops: Carbon deposits in the intake tract or on piston tops can result in poor fuel atomization, leading to incomplete combustion and illumination of the pollution warning light.

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