What is an SCR fault?

1 Answers
SanSpencer
07/29/25 10:05am
SCR refers to a fault in the Selective Catalytic Reduction system. Below are the relevant details: 1. Detail one: SCR stands for Selective Catalytic Reduction system, which functions similarly to the three-way catalyst in gasoline vehicles. It utilizes catalysts within the conventional muffler while also requiring a urea supply system and injection control system. 2. Detail two: The primary causes of such faults include sensor damage, loose or short-circuited sensor connectors, and related wiring harness issues. Occasionally, mismatched electrical parameters between the level/temperature sensor and the OEM specifications can lead to abnormal level or temperature readings, or even trigger sensor fault warnings.
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