U1000 OBD Trouble Code

1 result found

U1000 - GM
Type Network - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Class 2 Communication Malfunction Conditions

Cause

DTC B1327, U1300, U1301 and U1305 not current (any particular device 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 at least one operating parameter has not been associated with an identification number within 5 seconds after beginning serial data communication (a default value is used)

Try also: http://www.obd-codes.com/u1000