Subaru Legacy BN/BS (2015-2019) Service Manual: List of diagnostic trouble code (dtc) list

Subaru Legacy BN/BS (2015-2019) Service Manual / Hvac system (diagnostics) / List of diagnostic trouble code (dtc) list

NOTE:

When the sunload sensor check is performed indoors or in the shade, it could be diagnosed as having an open circuit. Always check the sunload sensor in direct sunlight.

DTC	Item	Note
B1430	IN-VEHICLE (POST EVAPORATOR) TEMPERATURE SENSOR CIRCUIT OPEN	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1430 IN-VEHICLE (POST EVAPORATOR) TEMPERATURE SENSOR CIRCUIT OPEN
B1431	IN-VEHICLE (POST EVAPORATOR) TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1431 IN-VEHICLE (POST EVAPORATOR) TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT
B1432	AMBIENT TEMPERATURE SENSOR CIRCUIT OPEN (AIR-CONDITIONER)	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1432 AMBIENT TEMPERATURE SENSOR CIRCUIT OPEN (AIR-CONDITIONER)
B1433	AMBIENT TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT (AIR-CONDITIONER)	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1433 AMBIENT TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT (AIR-CONDITIONER)
B1434	EVAPORATOR TEMPERATURE SENSOR CIRCUIT OPEN	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1434 EVAPORATOR TEMPERATURE SENSOR CIRCUIT OPEN
B1435	EVAPORATOR TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1435 EVAPORATOR TEMPERATURE SENSOR CIRCUIT SHORT-CIRCUIT
B1436	AIR MIX DOOR ACTUATOR CIRCUIT OPEN (PASSENGER)	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1436 AIR MIX DOOR ACTUATOR CIRCUIT OPEN (PASSENGER)
B1437	AIR MIX DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT (PASSENGER)	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1437 AIR MIX DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT (PASSENGER)
B1438	MODE DOOR ACTUATOR CIRCUIT OPEN	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1438 MODE DOOR ACTUATOR CIRCUIT OPEN
B1439	MODE DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1439 MODE DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT
B1440	AIR MIX DOOR ACTUATOR CIRCUIT OPEN (DRIVER)	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1440 AIR MIX DOOR ACTUATOR CIRCUIT OPEN (DRIVER)
B1441	AIR MIX DOOR ACTUATOR CIRCUIT STUCK (PASSENGER)	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1441 AIR MIX DOOR ACTUATOR CIRCUIT STUCK (PASSENGER)
B1442	AIR MIX DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT (DRIVER)	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1442 AIR MIX DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT (DRIVER)
B1443	MODE DOOR ACTUATOR CIRCUIT STUCK	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1443 MODE DOOR ACTUATOR CIRCUIT STUCK
B1446	AIR MIX DOOR ACTUATOR CIRCUIT STUCK (DRIVER)	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1446 AIR MIX DOOR ACTUATOR CIRCUIT STUCK (DRIVER)
B1448	REAR VENT DOOR ACTUATOR CIRCUIT OPEN	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1448 REAR VENT DOOR ACTUATOR CIRCUIT OPEN
B1449	REAR VENT DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B1449 REAR VENT DOOR ACTUATOR CIRCUIT SHORT-CIRCUIT
B144A	REAR VENT DOOR ACTUATOR CIRCUIT STUCK	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B144A REAR VENT DOOR ACTUATOR CIRCUIT STUCK
B14A1	SUNLOAD SENSOR CIRCUIT LOW/OPEN	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14A1 SUNLOAD SENSOR CIRCUIT LOW/OPEN NOTE: When the sunload sensor inspection is performed indoors or in the shade, it may be diagnosed as having an open circuit due to an insufficient light volume. In this case, check the sunload sensor at a location exposed to direct sunlight.
B14A2	SUNLOAD SENSOR CIRCUIT SHORT-CIRCUIT	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14A2 SUNLOAD SENSOR CIRCUIT SHORT-CIRCUIT NOTE: When the sunload sensor inspection is performed indoors or in the shade, it may be diagnosed as having an open circuit due to an insufficient light volume. In this case, check the sunload sensor at a location exposed to direct sunlight.
B14A3	REFRIGERANT PRESSURE SENSOR CIRCUIT OPEN	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14A3 REFRIGERANT PRESSURE SENSOR CIRCUIT OPEN
B14A4	REFRIGERANT PRESSURE SENSOR CIRCUIT SHORT-CIRCUIT	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14A4 REFRIGERANT PRESSURE SENSOR CIRCUIT SHORT-CIRCUIT
B14A5	REFRIGERANT FLOW SENSOR CIRCUIT OPEN	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14A5 REFRIGERANT FLOW SENSOR CIRCUIT OPEN
B14A6	REFRIGERANT FLOW SENSOR CIRCUIT SHORT-CIRCUIT	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14A6 REFRIGERANT FLOW SENSOR CIRCUIT SHORT-CIRCUIT
B14A7	VARIABLE SOLENOID VALVE CIRCUIT	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14A7 VARIABLE SOLENOID VALVE CIRCUIT
B14A8	COMPRESSOR BREAK-IN MALFUNCTION LOW REFRIGERANT	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14A8 COMPRESSOR BREAK-IN MALFUNCTION LOW REFRIGERANT
B14B1	SEAT HEATER THERMISTOR CIRCUIT OPEN (DRIVER)	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14B1 SEAT HEATER THERMISTOR CIRCUIT OPEN (DRIVER)
B14B2	SEAT HEATER THERMISTOR CIRCUIT SHORT-CIRCUIT (DRIVER)	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14B2 SEAT HEATER THERMISTOR CIRCUIT SHORT-CIRCUIT (DRIVER)
B14B3	SEAT HEATER THERMISTOR CIRCUIT OPEN (PASSENGER)	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14B3 SEAT HEATER THERMISTOR CIRCUIT OPEN (PASSENGER)
B14B4	SEAT HEATER THERMISTOR CIRCUIT SHORT-CIRCUIT (DRIVER)	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B14B4 SEAT HEATER THERMISTOR CIRCUIT SHORT-CIRCUIT (DRIVER)
U0002	CAN COMMUNICATION ERROR	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0002 CAN COMMUNICATION ERROR
U0028	HEATER CONTROL PANEL COMMUNICATION ERROR	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0028 HEATER CONTROL PANEL COMMUNICATION ERROR
U0073	CAN FAILURE, BUS ‘OFF’ DETECTION	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0073 CONTROL MODULE COMMUNICATION BUS OFF

Inspection mode procedure

It is possible to diagnose the DTC by performing the indicated inspection mode. After correcting the DTC, perform a necessary inspection mode and make sure that the function is resumed correctly and t ...

Read diagnostic trouble code (dtc) operation

1. On «Start» display, select «Diagnosis».2. On «Vehicle selection» display, input the target vehicle information and select «Confirmed».3. On «Main Menu» display, select «Each System».4. ...

Other materials:

Dtc p0073 ambient air temperature sensor circuit "a" high
NOTE:For the diagnostic procedure, refer to DTC P0072. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0072 AMBIENT AIR TEMPERATURE SENSOR CIRCUIT "A" LOW1. OUTLINE OF DIAGNOSISDetect the open or short circuit of ambient temperature sensor.Judge as NG if out of specification.2. COMPO ...

© 2017-2024 Copyright www.sulegacy.com