DTC P2257 Air System Control "A" Circuit Low: DTC Detecting Condition

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Immediately at fault recognition
GENERAL DESCRIPTION < Refer to DTC P2257 AIR SYSTEM CONTROL "A" CIRCUIT LOW , Diagnostic Trouble Code (DTC) Detecting Criteria. >

CAUTION: After servicing or replacing faulty parts, perform Clear Memory Mode < Refer to OPERATION , Clear Memory Mode. >, and Inspection Mode < Refer to PROCEDURE , Inspection Mode. >.