DTC B1433 Ambient Temperature Sensor Circuit Short-Circuit (Air-Conditioner)

DTC detecting condition: 

Ambient sensor circuit is shorted.

Trouble symptom: 

Ambient temperature is falsely recognized, and the compartment temperature is adjusted.

Wiring diagram: 

Air conditioning system Ref. to WIRING SYSTEM>Air Conditioning System>WIRING DIAGRAM .

Fig 1: Air Conditioning System Wiring Diagram (Ambient Temperature Sensor Short Circuit)

Courtesy of SUBARU OF AMERICA, INC.

Fig 2: Ambient Temperature Sensor Short Circuit Diagnosis Flowchart

Courtesy of SUBARU OF AMERICA, INC.