Subaru Legacy BN/BS (2015-2019) Service Manual: Diagnostic procedure with diagnostic trouble code (dtc)

Subaru Legacy BN/BS (2015-2019) Service Manual / Hvac system (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc)

Dtc u0002 can communication error
Dtc b1430 in-vehicle (post evaporator) temperature sensor circuit open
Dtc u0028 heater control panel communication error
Dtc u0073 control module communication bus off
Dtc b14b4 seat heater thermistor circuit short-circuit (driver)
Dtc b14b3 seat heater thermistor circuit open (passenger)
Dtc b14b2 seat heater thermistor circuit short-circuit (driver)
Dtc b14b1 seat heater thermistor circuit open (driver)
Dtc b14a8 compressor break-in malfunction low refrigerant
Dtc b14a7 variable solenoid valve circuit
Dtc b14a6 refrigerant flow sensor circuit short-circuit
Dtc b14a5 refrigerant flow sensor circuit open
Dtc b14a4 refrigerant pressure sensor circuit short-circuit
Dtc b14a3 refrigerant pressure sensor circuit open
Dtc b14a2 sunload sensor circuit short-circuit
Dtc b14a1 sunload sensor circuit low/open
Dtc b144a rear vent door actuator circuit stuck
Dtc b1449 rear vent door actuator circuit short-circuit
Dtc b1448 rear vent door actuator circuit open
Dtc b1446 air mix door actuator circuit stuck (driver)
Dtc b1443 mode door actuator circuit stuck
Dtc b1442 air mix door actuator circuit short-circuit (driver)
Dtc b1441 air mix door actuator circuit stuck (passenger)
Dtc b1440 air mix door actuator circuit open (driver)
Dtc b1439 mode door actuator circuit short-circuit
Dtc b1438 mode door actuator circuit open
Dtc b1437 air mix door actuator circuit short-circuit (passenger)
Dtc b1436 air mix door actuator circuit open (passenger)
Dtc b1435 evaporator temperature sensor circuit short-circuit
Dtc b1434 evaporator temperature sensor circuit open
Dtc b1433 ambient temperature sensor circuit short-circuit (air-conditioner)
Dtc b1432 ambient temperature sensor circuit open (air-conditioner)
Dtc b1431 in-vehicle (post evaporator) temperature sensor circuit short-circuit

Electrical specification

Terminal No.ContentMeasuring conditionStandardA1 ←> Chassis groundIgnition power supplyIgnition switch: ONBattery voltageA2CAN-H (CAN communication line)Measurement load (digital signal) — A3CA ...

Dtc u0002 can communication error

DTC DETECTING CONDITION:• Data to be received via CAN communication do not arrive.• A/C cooperation control does not operate.TROUBLE SYMPTOM:A/C does not operate fully automatically.STEPCH ...

Other materials:

Inspection
1. Check that the fuel injector has no deformation, cracks or other damages.2. Measure the resistance between fuel injector terminals.Terminal No.Standard1 and 2Approx. 12.0 - (when 20°C (68°F)) ...