U1001 OBD Trouble Code

1 result found

U1001 - GM
Type Network - Manufacturer Controlled DTC - Manufacturer Controlled

Loss of XXX Communications Conditions


DTC B1327, B1328, U1300, U1301 and U1305 not set (any one of the devices on the Class 2 serial data circuit will support some subset of these codes), the ignition switch position requires serial data communication to occur, then a message from a learned identification number was not detected for the past 5 seconds

Try also: https://www.obd-codes.com/u1001