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Home >> Volvo >> 2002 >> S80 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Control Modules - Design And Function - 4 Of 4) >> Upper Electronic Module (2001-2004) >> Diagnostic Functions >> Diagnostic Trouble Codes (DTCs)

Diagnostic Trouble Codes (DTCs)

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A diagnostic trouble code (DTC) is stored if the control module detects a fault. The control module can store up to 15 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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