MasterTuning Fault code dictionary (DTC)

P0428 — Catalyst Temperature Sensor High Bank 1

Severity: Warning Can you drive? With caution: limp mode possible, have it checked soon Make: All makes (OBD-II standard)
MeaningCatalyst Temperature Sensor High Bank 1.
FamilyPowertrain (P)

Frequently asked questions

What does code P0428 mean?

Catalyst Temperature Sensor High Bank 1. Catalyst Temperature Sensor High Bank 1.

Can I keep driving with code P0428 active?

With caution: limp mode possible, have it checked soon

How do you fix code P0428?

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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