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Home >> Volvo >> 2009 >> S80 Base >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> Miscellaneous Electrical - Design And Function - 3 Of 5 >> Engine Control Module (ECM) (B8444S; 2007-2010) >> Diagnostic Functions >> Overview >> Substitute Value

Substitute Value

For certain types of diagnostic trouble codes (DTCs), the missing signal is replaced with a substitute value so that the system can continue functioning.