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C1A67 on the 2014 Jaguar XJ

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.

Bulletins for this model year that name C1A67
SSM723072018-12-10. Service bulletin. The message "Radar Sensor Blocked" appears in instrument pack display. If blockage occurs while ACC is being used, ?Driver Intervene? and/or "Radar sensor blocked" message will appear on the cluster and DTC C1A67-97 is also set. Blockage can also occur when ACC is not being used.
SSM723072018-06-18. Service bulletin. Issue: The message "Radar Sensor Blocked" appears in instrument pack display. If blockage occurs while ACC is being used, ?Driver Intervene? and/or "Radar sensor blocked" message will appear on the cluster and DTC C1A67-97 is also set. Blockage can also occur when ACC is not being used.
SSM723072017-03-30. Service bulletin. "ISSUE THE MESSAGE ""RADAR SENSOR BLOCKED"" APPEARS IN INSTRUMENT PACK DISPLAY. IF BLOCKAGE OCCURS WHILE ACC IS BEING USED, “DRIVER INTERVENE” AND/OR ""RADAR SENSOR BLOCKED"" MESSAGE WILL APPEAR ON THE CLUSTER AND DTC C1A67-97 IS ALSO SET. BLOCKAGE CAN ALSO OCCUR WHEN ACC IS NOT BEING USED. CAUSE ""RADAR SENSOR BLOCKED"" INDICATES THAT THE ADAPTIVE SPEED CONTROL SYSTEM'S VISIBILITY HAS BEEN REDUCED DUE TO AN OBSTRUCTION. ACC CONTINUALLY SCANS FOR OBJECTS AHEAD AND, IF IT SEES NO OBJECTS I.E. VEHICLES, ROAD SIGNS, LAMPPOSTS, GUARD RAILS ETC, IT WILL INDICATE A BLOCKAGE EVEN IF THE ACC IS NOT USED. THE C1A67-97 DTC FLAGS A RADAR BLOCKAGE SITUATION AND NOT A SYSTEM FAULT."
SSM723072017-03-29. Service bulletin. "ISSUE THE MESSAGE ""RADAR SENSOR BLOCKED"" APPEARS IN INSTRUMENT PACK DISPLAY. IF BLOCKAGE OCCURS WHILE ACC IS BEING USED, “DRIVER INTERVENE” AND/OR ""RADAR SENSOR BLOCKED"" MESSAGE WILL APPEAR ON THE CLUSTER AND DTC C1A67-97 IS ALSO SET. BLOCKAGE CAN ALSO OCCUR WHEN ACC IS NOT BEING USED. CAUSE ""RADAR SENSOR BLOCKED"" INDICATES THAT THE ADAPTIVE SPEED CONTROL SYSTEM'S VISIBILITY HAS BEEN REDUCED DUE TO AN OBSTRUCTION. ACC CONTINUALLY SCANS FOR OBJECTS AHEAD AND, IF IT SEES NO OBJECTS I.E. VEHICLES, ROAD SIGNS, LAMPPOSTS, GUARD RAILS ETC, IT WILL INDICATE A BLOCKAGE EVEN IF THE ACC IS NOT USED. THE C1A67-97 DTC FLAGS A RADAR BLOCKAGE SITUATION AND NOT A SYSTEM FAULT."
SSM-723072016-09-01. Service bulletin. "ISSUE THE MESSAGE ""RADAR SENSOR BLOCKED"" APPEARS IN INSTRUMENT PACK DISPLAY. IF BLOCKAGE OCCURS WHILE ACC IS BEING USED, “DRIVER INTERVENE” AND/OR ""RADAR SENSOR BLOCKED"" MESSAGE WILL APPEAR ON THE CLUSTER AND DTC C1A67-97 IS ALSO SET. BLOCKAGE CAN ALSO OCCUR WHEN ACC IS NOT BEING USED. CAUSE ""RADAR SENSOR BLOCKED"" INDICATES THAT THE ADAPTIVE SPEED CONTROL SYSTEM'S VISIBILITY HAS BEEN REDUCED DUE TO AN OBSTRUCTION. ACC CONTINUALLY SCANS FOR OBJECTS AHEAD AND, IF IT SEES NO OBJECTS I.E. VEHICLES, ROAD SIGNS, LAMPPOSTS, GUARD RAILS ETC, IT WILL INDICATE A BLOCKAGE EVEN IF THE ACC IS NOT USED. THE C1A67-97 DTC FLAGS A RADAR BLOCKAGE SITUATION AND NOT A SYSTEM FAULT."

5 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.