MasterTuning Fault code dictionary (DTC)

B1235 — Emissions sensor (B31)

Severity: Warning Can you drive? With caution: limp mode possible, have it checked soon Make: Mercedes-Benz
MeaningEmissions sensor (B31).
FamilyBody (B)

Frequently asked questions

What does code B1235 mean?

Emissions sensor (B31). Emissions sensor (B31).

Can I keep driving with code B1235 active?

With caution: limp mode possible, have it checked soon

How do you fix code B1235?

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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