MasterTuning Fault code dictionary (DTC)

U1020 — SCP (J1850) Invalid or Missing Data for Air Conditioning Clutch

Severity: Warning 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 Air Conditioning Clutch.
FamilyNetwork (U)

Frequently asked questions

What does code U1020 mean?

SCP (J1850) Invalid or Missing Data for Air Conditioning Clutch. SCP (J1850) Invalid or Missing Data for Air Conditioning Clutch.

Can I keep driving with code U1020 active?

With caution: limp mode possible, have it checked soon

How do you fix code U1020?

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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