Diagnostic trouble codes (DTCs)

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

A diagnostic trouble code (DTC) is stored and the DSA warning lamp lights if the control module detects a fault. The exception is diagnostic trouble code (DTC) DSA-122 DSA warning lamp. This DSA warning lamp cannot be activated if this fault is stored.

Faults, with the exception of diagnostic trouble code (DTC) DSA-122 DSA warning lamp, disengage the DSA function. If diagnostic trouble code (DTC) DSA-122 DSA warning lamp is stored, the warning lamp cannot be used to determine whether the DSA function is engaged or not. The DSA function is then always engaged and cannot be disengaged manually.

If the DSA warning lamp is lit, the DSA function is not operating normally or it is not engaged.

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