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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 P04CB: BMW DTC 21B021; DME -- Fuel Fill Door Open Request Sensor/Switch Circuit High >> Fault description

Fault description

The diagnosis monitors the hybrid pressure refuelling electronic control unit TFE.

Fault monitoring conditions:

Secondary fault, perform troubleshooting on the control unit causing the fault:

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