MasterTuning Fault code dictionary (DTC)

27DA — Alternator BSD Fault

Severity: Warning Can you drive? With caution: limp mode possible, have it checked soon Make: BMW
MeaningAlternator BSD Fault.
SystemME 9
FamilyManufacturer-native code

Frequently asked questions

What does code 27DA mean?

Alternator BSD Fault. Alternator BSD Fault. (System: ME 9)

Can I keep driving with code 27DA active?

With caution: limp mode possible, have it checked soon

How do you fix code 27DA?

Diagnosis starts from reading the live ECU parameters: the code points to the fault area, not to the part to replace. A vehicle-electronics specialist can test the component and clear the code after the repair.

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