MasterTuning Fault code dictionary (DTC)

P0391 — Camshaft Position Sensor "B" Circuit Range/Performance Bank 2

Severity: Serious Can you drive? With caution: limp mode possible, have it checked soon Make: All makes (OBD-II standard)
MeaningCamshaft Position Sensor "B" Circuit Range/Performance Bank 2.
FamilyPowertrain (P)

Frequently asked questions

What does code P0391 mean?

Camshaft Position Sensor "B" Circuit Range/Performance Bank 2. Camshaft Position Sensor "B" Circuit Range/Performance Bank 2.

Can I keep driving with code P0391 active?

With caution: limp mode possible, have it checked soon

How do you fix code P0391?

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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