MasterTuning Fault code dictionary (DTC)

U1218 — SCP (J1850) Invalid or Missing Data for External Lamps

Severity: Informational Can you drive? With caution: limp mode possible, have it checked soon Make: All makes (OBD-II standard)
MeaningSCP (J1850) Invalid or Missing Data for External Lamps.
FamilyNetwork (U)

Frequently asked questions

What does code U1218 mean?

SCP (J1850) Invalid or Missing Data for External Lamps. SCP (J1850) Invalid or Missing Data for External Lamps.

Can I keep driving with code U1218 active?

With caution: limp mode possible, have it checked soon

How do you fix code U1218?

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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