Turbo control: Diagnostics: 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.

If there is an open circuit or short circuit to ground, diagnostic trouble code P1662 will be generated.
If there is a short circuit to B+, diagnostic trouble code P1663 will be generated.
If the air mass per combustion is higher than the requested, diagnostic trouble code P1549 will be generated.