MasterTuning Fault code dictionary (DTC)

U0063 — Vehicle Communication Bus D (–) shorted to Bus D (+)

Severity: Serious Can you drive? With caution: limp mode possible, have it checked soon Make: All makes (OBD-II standard)
MeaningVehicle Communication Bus D (–) shorted to Bus D (+).
FamilyNetwork (U)

Frequently asked questions

What does code U0063 mean?

Vehicle Communication Bus D (–) shorted to Bus D (+). Vehicle Communication Bus D (–) shorted to Bus D (+).

Can I keep driving with code U0063 active?

With caution: limp mode possible, have it checked soon

How do you fix code U0063?

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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Where to get it fixed

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