MasterTuning Fault code dictionary (DTC)

P1491 — Secondary Switch Solenoid Circuit Malfunction

Severity: Warning Can you drive? With caution: limp mode possible, have it checked soon Make: All makes (OBD-II standard)
MeaningSecondary Switch Solenoid Circuit Malfunction.
FamilyPowertrain (P)

Frequently asked questions

What does code P1491 mean?

Secondary Switch Solenoid Circuit Malfunction. Secondary Switch Solenoid Circuit Malfunction.

Can I keep driving with code P1491 active?

With caution: limp mode possible, have it checked soon

How do you fix code P1491?

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.

Need help with this fault?

We are ECU specialists: diagnosis, file repair and remapping for cars, bikes, trucks and agricultural vehicles.

Contact us
Where to get it fixed

Related codes