MasterTuning Fault code dictionary (DTC)

5121 — IBIS acknowledgement active

Severity: Warning Can you drive? With caution: limp mode possible, have it checked soon Make: MAN
MeaningIBIS acknowledgement active.
SystemZBRO
FamilyManufacturer-native code

Frequently asked questions

What does code 5121 mean?

IBIS acknowledgement active. IBIS acknowledgement active. (System: ZBRO)

Can I keep driving with code 5121 active?

With caution: limp mode possible, have it checked soon

How do you fix code 5121?

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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