DTC P1230: Throttle Position Sensor 1 and 2 Circuit. Sum Out of Range.: 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.
(Incorrect signal from throttle disc position sensor)
Fig 1: Circuit Diagram - Throttle Position Sensor 1 And 2 Circuit. Sum Out Of Range