U0003

High Speed CAN Communication Bus (+) Open

DTC U0003, sometimes indicated as U000300 is an OBD diagnostic trouble code indicating a generic fault with the vehicle user network.

  • U0003: High Speed CAN Communication Bus (+) Open
  • U0003: Controller area network (CAN) data bus, high speed bus (+) – open circuit
  • U0003 00: Controller area network (CAN) data bus, high speed bus (+) - open circuit

DTC Trouble Code Search
Bulletins

Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

  • 1HD-F8M6H-03 - ELECTRICAL SYSTEM:SOFTWARE
    HARLEY-DAVIDSON: Tech article, ta0015: my17 abs historic dtc codes. Abs codes U0001 and U0003 showing up in digital technician ii under the historic codes section. Harley davidson has been able to trace these codes back to the techlink module being connecte
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