DTC P1671: Relay of limp-home function, short circuit to B+: Notes
WARNING: This page is about a different car, the 2003 Saab 9-3 and 2002 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Circuit Diagram - Relay Of Limp-Home Function, Short Circuit To B+
Courtesy of SAAB-SCANIA OF AMERICA, INC.
NOTE:
The relay/electrical circuit that activates the throttle's limp-home function is faulty.