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HVAC DTCS

HVAC DIAGNOSTIC TROUBLE CODE CHART

DTC Code Description
B1411/11*1 Room Temperature Sensor Circuit
B1412/12 Ambient Temperature Sensor Circuit
B1413/13 Evaporator Temperature Sensor Circuit
B1417/17 Rear Evaporator Temperature Sensor Circuit
B1419/19*1 Rear Room Temperature Sensor Circuit
B1421/21*2 Solar Sensor Circuit (Passenger Side)
B1422/22 Compressor Lock Sensor Circuit
B1423/23 Pressure Sensor Circuit
B1424/24*2 Solar Sensor Circuit (Driver Side)
B1431/31 Air Mix Damper Position Sensor Circuit (Passenger Side)
B1432/32 Air Inlet Damper Position Sensor Circuit
B1433/33 Air Outlet Damper Position Sensor Circuit
B1436/36 Air Mix Damper Position Sensor Circuit (Driver Side)
B1437/37 Rear Air Mix Damper Position Sensor Circuit
B1439/39 Rear Air Outlet Damper Position Sensor Circuit
B1441/41 Air Mix Damper Control Servo Motor Circuit (Passenger Side)
B1442/42 Air Inlet Damper Control Servo Motor Circuit
B1443/43 Air Outlet Damper Control Servo Motor Circuit
B1446/46 Air Mix Damper Control Servo Motor Circuit (Driver Side)
B1447/47 Rear Air Mix Damper Control Servo Motor Circuit
B1449/49 Rear Air Outlet Damper Control Servo Motor Circuit
B1451/51 Compressor Solenoid Circuit
B1499/99 Multiplex Communication Circuit
HINT:
  • *1: If the cabin temperature is approximately -18.6°C (-3.7°F) or lower, DTC B1411/11 may be output even though the system is normal.
  • *2: If the check is being performed in a dark place, DTC B1421/21 or B1424/24 (solar sensor circuit abnormal) could be displayed.
  • *3: Short in the circuit.
  • *4: Open in the circuit.