Conditions For Clearing DTC
WARNING: This page is about a different car, the 2002 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.
Current DTC U1255 will clear when all critical operating parameters for module have been associated with an identification number or at end of current ignition cycle. History DTC clears when scan tool CLEAR CODES command is received.