MasterTuning Fault code dictionary (DTC)

3709 — Engine brake off (switch)

Severity: Warning Can you drive? With caution: limp mode possible, have it checked soon Make: MAN
MeaningEngine brake off (switch).
SystemZBRO
FamilyManufacturer-native code

Frequently asked questions

What does code 3709 mean?

Engine brake off (switch). Engine brake off (switch). (System: ZBRO)

Can I keep driving with code 3709 active?

With caution: limp mode possible, have it checked soon

How do you fix code 3709?

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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