MasterTuning Fault code dictionary (DTC)

P1240 — Sensor Power Supply Malfunction

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

Frequently asked questions

What does code P1240 mean?

Sensor Power Supply Malfunction. Sensor Power Supply Malfunction.

Can I keep driving with code P1240 active?

With caution: limp mode possible, have it checked soon

How do you fix code P1240?

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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