Ambient Sensor (Auto A/C): Inspection
WARNING: This page is about a different car, the 2003 Subaru Outback, 2003 Subaru Legacy, and 2003 Subaru Baja. However, it is still accessible from the selected car via links, so may be relevant.
< Ref. to DTC 21 OR -21 (AMBIENT SENSOR) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>