It sounds simple, but a forgotten tighten or worn-out seal can trigger the light due to an improper fuel system pressure.
Oxygen Sensor Issues
These sensors monitor exhaust oxygen levels, and malfunctioning ones can indicate incorrect fuel-to-air mixture, impacting emissions and triggering the light.
Catalytic Converter Problems
This crucial emissions control component can get clogged or damaged, causing the light to come on and impacting engine performance
Spark Plug/Ignition Coil Faults
Worn spark plugs or faulty ignition coils can lead to incomplete combustion, triggering the light and affecting engine performance and fuel efficiency.
Mass Airflow Sensor Malfunction
This sensor measures incoming air, and inaccurate readings can affect fuel mixture and trigger the light.
Vacuum Leaks
Leaks in the engine's vacuum system can disrupt proper air intake, influencing fuel mixture and potentially illuminating the light.
Exhaust Gas Recirculation (EGR) Valve Issues
The EGR valve recirculates exhaust gases for cleaner emissions, and its malfunction can trigger the light.
Defective Sensors
Various sensors monitor engine functions like coolant temperature, crankshaft position, or throttle position. If any of these fail, the light may come on.
Emission System Leaks
Leaks in exhaust components or emission control systems can cause the light to illuminate due to improper emission processing.
Loose or Corroded Battery Terminals
A loose connection or corrosion on the battery terminals can disrupt electrical systems and trigger the light, even if directly unrelated to the engine