NOx Sensor Replacement Volkswagen Touareg 2013 3.0 TDI
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NOx sensor replacement on a 2013 Volkswagen Touareg 3.0 TDI. Photo shows the removed old, damaged NOx sensor and its control unit: the sensor tip is damaged and discolored, the metal body is worn. The NOx sensor measures nitrogen oxide levels in the exhaust and is part of the diesel emission control system. Replacing the damaged sensor restores correct engine operation and compliance with emission standards.
