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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 >> Misfire diagnostics >> Diagnostic trouble code (DTC) management
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Diagnostic trouble code (DTC) management

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Diagnostic trouble codes (DTC) for misfiring will light the malfunction indicator lamp (MIL).

The engine control module (ECM) determines how much the engine is misfiring by counting the number of misfires during a certain number of engine revolutions.

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