MasterTuning Fault code dictionary (DTC)

U0406 — Invalid Data Received From Fuel Injector Control Module

Severity: Warning Can you drive? With caution: limp mode possible, have it checked soon Make: All makes (OBD-II standard)
MeaningInvalid Data Received From Fuel Injector Control Module.
FamilyNetwork (U)

Frequently asked questions

What does code U0406 mean?

Invalid Data Received From Fuel Injector Control Module. Invalid Data Received From Fuel Injector Control Module.

Can I keep driving with code U0406 active?

With caution: limp mode possible, have it checked soon

How do you fix code U0406?

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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