What are the causes of IVECO China VI emission faults?

[McKhloe]

IVECO China VI emission faults are most commonly caused by the oxygen sensor in the exhaust pipe. Below are the related explanations: Carbon buildup on components: The most common cause is when carbon deposits or other impurities from the engine or gasoline are carried out with the exhaust gases, contaminating and covering the oxygen sensor, preventing it from properly collecting signals, which triggers the emission fault warning light. This issue is somewhat related to the quality of the fuel used. After removing the carbon deposits and restarting the engine, the warning light should turn off. Other factors: Another major cause is the oxygen sensor itself being damaged and unable to function properly. In this case, the oxygen sensor needs to be replaced. Additionally, if there are issues with the wiring harness between the oxygen sensor and the computer, causing the computer to continuously or intermittently fail to receive signals from the oxygen sensor, the emission fault warning light will illuminate. In such cases, the related wiring harness needs to be addressed.