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What does it mean when the fault indicator light comes on in a Buick Excelle?

1 Answers

ReidMarie

07/29/25 7:45pm

Buick Excelle engine fault light comes on for the following reasons: 1. Exhaust emissions do not meet standards: Poor fuel quality, failed catalytic converter, excessive carbon buildup in the intake pipe, clogged fuel injectors, failed oxygen sensors, or occasional engine misfires can all cause the engine fault light to illuminate. Among these, poor fuel quality is the most common cause; replacing the catalytic converter can resolve this issue. 2. Poor engine system performance leading to fault light illumination: Issues such as throttle pedal sensor, throttle position sensor, air flow meter, crankshaft position sensor malfunctions, or poor wiring connections can all trigger the engine fault light; repair or replacement should be carried out according to relevant maintenance methods. 3. Transmission system faults in some vehicles: Transmission system issues in certain vehicles are also indicated by the engine fault light, such as internal transmission faults, slipping, or overheating. It is necessary to visit a repair shop for maintenance and inspection.

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