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Home >> Volvo >> 2000 >> S80 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 9 Of 11 >> ECM-720A: Immobilizer Communication. Signal Missing. Intermittent Fault (B5254T2; 2004) >> Signal missing. Intermittent fault >> Checking the component

Checking the component

The immobilizer function is integrated in the central electronic module (CEM).

The engine control module (ECM) has previously registered a fault in communication with the central electronic module (CEM), but detects that the fault no longer exists.