DTC P1602 Control Module Programming Error: Trouble Symptom

WARNING: This page is about a different car, the 2007 Subaru Outback and 2007 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.

Engine keeps running at higher speed than specified idle speed.
Engine keeps running at a lower speed than the specified idle speed.
Engine stalls.

CAUTION: After repairing or replacing the defective part, perform the Clear Memory Mode <Ref. to OPERATION , Clear Memory Mode .> and Inspection Mode <Ref. to PROCEDURE , Inspection Mode .>.