DTC B14A8: Compressor Break-In Malfunction Low Refrigerant

WARNING: This page is about a different variant/trim than selected.

DTC detecting condition:

Compressor was operated while refrigerant was low.
Compressor was operated while refrigerant pressure was extremely low.
Judgment is made only when the delivery mode fuse is installed.

Trouble symptom:

A/C does not operate.

Wiring diagram:

Air conditioning system Ref. to WIRING SYSTEM (IMPREZA MODEL)>AIR CONDITIONING SYSTEM>WIRING DIAGRAM . Ref. to WIRING SYSTEM (CROSSTREK MODEL (EXCEPT FOR HEV))>AIR CONDITIONING SYSTEM>WIRING DIAGRAM .

G11257802

Courtesy of SUBARU OF AMERICA, INC.

CAUTION: Before performing diagnosis, refer to "CAUTION" in "General Description". Ref. to AIR CONDITIONER (DIAGNOSTICS) (EXCEPT FOR HEV)>GENERAL DESCRIPTION>CAUTION .

CHECK AMOUNT OF REFRIGERANT .
Check the refrigerant pressure and filling amount. Ref. to AIR CONDITIONER (EXCEPT FOR HEV)>REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET .

Is the filling amount a standard value?

Yes: Check that DTC B14A3 (open circuit malfunction) or B14A4 (short circuit malfunction) is recorded, and if either one of these DTCs is recorded, perform the diagnosis according to the DTC. If nothing is recorded, replace the compressor. Ref. to AIR CONDITIONER (DIAGNOSTICS) (EXCEPT FOR HEV)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B14A3: REFRIGERANT PRESSURE SENSOR CIRCUIT OPEN . Ref. to AIR CONDITIONER (DIAGNOSTICS) (EXCEPT FOR HEV))>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC B14A4: REFRIGERANT PRESSURE SENSOR CIRCUIT SHORT-CIRCUIT . Ref. to AIR CONDITIONER (EXCEPT FOR HEV)>COMPRESSOR .

No: Replace the compressor. Ref. to AIR CONDITIONER (EXCEPT FOR HEV)>COMPRESSOR .