Reading and erasing diagnostic trouble codes
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2007 Volvo V70, 2006 Volvo V70, 2005 Volvo V70, 2004 Volvo V70, and 2003 Volvo V70. However, it is still accessible from the selected car via links, so may be relevant.
Stored diagnostic trouble codes can be read and erased using this facility.
Erasing diagnostic trouble codes can only be done when all the diagnostic trouble codes have been read at least once.