What Causes the Volvo Exhaust Emission System Warning Light to Illuminate?

1 Answers
Stewart
07/23/25 11:15pm
Emission control system malfunctions can lead to increased fuel consumption and reduced engine lifespan, among other issues. Below are detailed explanations of the related consequences: Increased fuel consumption: Higher fuel consumption may occur, and over time, poor combustion efficiency can result in excessive carbon buildup. Reduced lifespan: This can pose safety hazards during driving and shorten the engine's service life. During vehicle operation, issues such as fuel supply system or ignition system failures can cause engine overheating or backfire, leading to sintering and peeling of the three-way catalytic converter substrate, increased exhaust resistance, etc. Without a proper basis for air-fuel mixture correction, the ECU may inaccurately control fuel injection, which over time can adversely affect the engine's longevity.
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