MasterTuning Fault code dictionary (DTC)

B1509 — Flash To Pass Switch Circuit Short To Battery

Severity: Warning Can you drive? With caution: limp mode possible, have it checked soon Make: All makes (OBD-II standard)
MeaningFlash To Pass Switch Circuit Short To Battery.
FamilyBody (B)

Frequently asked questions

What does code B1509 mean?

Flash To Pass Switch Circuit Short To Battery. Flash To Pass Switch Circuit Short To Battery.

Can I keep driving with code B1509 active?

With caution: limp mode possible, have it checked soon

How do you fix code B1509?

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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