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Home >> Volvo >> 2007 >> XC70 >> Repair and Diagnosis >> External Pages >> Different car >> Section 50 (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

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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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