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Home >> Volvo >> 2003 >> S80 Base >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> Control Modules - Design And Function - 1 Of 3 >> Central Electronic Module (CEM) (1999-2004) >> Diagnostic Functions >> Diagnostic Trouble Codes (DTCs)

Diagnostic Trouble Codes (DTCs)

A diagnostic trouble code (DTC) is stored if the control module detects a fault. The control module can store up to 10 diagnostic trouble codes (DTCs).

If a fault disappears for any reason after the diagnostic trouble code (DTC) has been permanently stored in the control module, information about the fault remains in the control module.

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