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Home >> Volvo >> 2001 >> V70 XC >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Bulbs, Control Modules, Charging - Design And Function >> Engine Control Module (ECM) (B5244S; 2003-2007) >> Diagnostic functions >> Overview >> Substitute value
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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.

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