What causes the emission system malfunction in GAC Trumpchi GS4?

[LaBrooklyn]

Here is the relevant introduction to the emission system malfunction in GAC Trumpchi GS4: 1. Poor fuel quality: If the gasoline quality is poor, it may cause abnormal air-fuel mixture, electronic component failures, and exhaust system abnormalities; 2. Intake/exhaust system failure: Malfunctions in electronic components of the intake/exhaust system, such as oxygen sensors, carbon canister purge valves, mass air flow sensors, electromagnetic control valves on turbochargers, throttle body, or carbon deposits inside the engine; 3. Program debugging: The engine control program may require updates or appropriate debugging.