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Home >> Volvo >> 2011 >> S40 T-5 R-Design >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> Accessory Electronic Module (AEM) And Central Electronic Module (CEM) Diagnostic Trouble Codes (544 Body) >> CEM-1A21: Engine Control Module (ECM). Signal Too Low (2004-2011) >> Signal Too Low (2004, 2005, 2006, 2007) >> Information >> Fault-Tracing Information
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Fault-Tracing Information

The fault should have been detected and remedied. As this is not the case fault-tracing has failed.

Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.