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Home >> Volvo >> 2001 >> S80 Base >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> Control Modules - Design And Function - 3 Of 3 >> Transmission Control Module (TCM) (Aw50/51 AWD; Aw55-50/51SN; 2004-2006) >> Transmission control module (TCM) diagnostic functions >> Diagnostic trouble codes (DTCs)

Diagnostic trouble codes (DTCs)

The control module will store a diagnostic trouble code (DTC) if it detects a fault. 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 stored in the control module.