Subaru Legacy 2002 Service Manual page 3205

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC) (LHD
MODEL)
HVAC System (Auto A/C) (Diagnostics)
B: DTC 22 OR –22 (IN-VEHICLE SENSOR)
S001809K27
TROUBLE SYMPTOM:
When turning AUTO switch to ON, blower fan speed, outlet port and inlet port is not changed.
If DTC 22 or −22 appears on the display, replace the A/C control module. The in-vehicle sensor is built into
the A/C control module and cannot be replaced as a single unit.
AC-62