Diagnostic Functions: DTCs
WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
If the control module detects a fault it will store a diagnostic trouble code (DTC). The control module can store up to 11 diagnostic trouble codes (DTCs).
If for some reason a fault disappears after the diagnostic trouble code (DTC) has been permanently stored in the control module, information about the fault is stored in the control module.