MasterTuning Fault code dictionary (DTC)

U0115 — Lost Communication With ECM/PCM "B"

Severity: Serious Can you drive? With caution: limp mode possible, have it checked soon Make: All makes (OBD-II standard)
MeaningLost Communication With ECM/PCM "B".
FamilyNetwork (U)

Frequently asked questions

What does code U0115 mean?

Lost Communication With ECM/PCM "B". Lost Communication With ECM/PCM "B".

Can I keep driving with code U0115 active?

With caution: limp mode possible, have it checked soon

How do you fix code U0115?

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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