Diagnostic trouble code (DTC) status ECM-2100, Front heated oxygen sensor (HO2S). Current too high

Reading off Diagnostic trouble code (DTC) status ECM-2100 

• Read off the Diagnostic trouble code (DTC) status. Check the status of the relevant Diagnostic Trouble Code (DTC).

Fig 1: Identifying VCT2000

Courtesy of VOLVO CARS OF NORTH AMERICA.

Was the status of the relevant Diagnostic Trouble Code (DTC) displayed as permanent? 

• YES 

  Refer to Checking wiring and components 

• NO 

  Refer to Current too high. Intermittent fault