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Home >> BMW >> 2012 >> X5 M >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Self Diagnosis - Diagnostic Trouble Codes - DTC P0035 - DTC P0480 (N63 & S63) >> Diagnostic Trouble Codes (DTCS) MSD85 - Bn2020 >> DTC P0478, BMW Hex Code 0x138101, BMW Code 1278209: Exhaust Pressure Control Valve 'A' High >> Possible Fault Causes

Possible Fault Causes

-Defect in wiring harness between DME and electric exhaust-flap pilot valve

-Electric exhaust-flap pilot valve is defective

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