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Home >> Volvo >> 2009 >> S40 Base, 2.4 38, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 2 Of 10 (544 Body) >> ECM-2120: Front Heated Oxygen Sensor (Ho2S). Signal Too Low (B5244S4; 2004-2010) >> Signal Too Low (2008, 2009, 2010) >> Checking The Status
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Checking The Status

NOTE:

When reading off the diagnostic trouble code (DTC) status, other stored diagnostic trouble codes (DTCs) and their status will also be listed.

Fig 1: Identifying Ignition ON
GLL101051Courtesy of VOLVO CARS OF NORTH AMERICA.