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Home >> BMW >> 2013 >> M3 2D Convertible, Standard Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Self Diagnosis - Diagnostic Trouble Codes - DTC P000A - DTC P158D (S65) >> MSS60 Engine Operating System DTCS >> DTC P0620, BMW Hex Code 0x278C, BMW Code 10124: Generator Control Circuit (SIG) >> Possible Fault Causes
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Possible Fault Causes

Electrical malfunction; phase or diode failure. Regulator control circuit failure ==> Undervoltage or overvoltage

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