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Home >> Volvo >> 2009 >> XC90 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 7 Of 13 >> ECM-720A: Immobilizer Communication. Signal Missing. Intermittent Fault (B5254T2; B6294T; 2003-2004) >> 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.