U1120 – SCP (J1850) Invalid or Missing Data for Primary Id

U1120 Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

U1120 Description

SCP (J1850) Invalid or Missing Data for Primary Id is the generic description for the U1120 code, but the manufacturer may have a different description. Currently we have no further information abouth the U1120 OBDII code.