MasterTuning Fault code dictionary (DTC)

B1233 — Refrigerant temperature sensor (B12/1)

Severity: Warning Can you drive? With caution: limp mode possible, have it checked soon Make: Mercedes-Benz
MeaningRefrigerant temperature sensor (B12/1).
FamilyBody (B)

Frequently asked questions

What does code B1233 mean?

Refrigerant temperature sensor (B12/1). Refrigerant temperature sensor (B12/1).

Can I keep driving with code B1233 active?

With caution: limp mode possible, have it checked soon

How do you fix code B1233?

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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