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Home >> BMW >> 2014 >> 535d >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Self Diagnosis - Diagnostic Trouble Codes (N47 & N57, Diesel) >> Fault Code Tests >> DTC U019D: BMW DTC 1B8302; DME -- Lost Communication With Direct Ozone Reduction Catalyst Temperature Sensor >> Fault description

Fault description

Diagnosis monitors LIN communication to the environmental air catalyst sensor.

Fault monitoring conditions:

The fault is detected if the environmental air catalyst sensor does not respond.