LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2021 >> LC 500h >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> DTC Index (1 Of 2) >> Heating / Air Conditioning DTCS >> Air Conditioning System
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Air Conditioning System

AIR CONDITIONING SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [01/2017 - 09/2018]

DTC Code Description
B1411 Room Temperature Sensor Circuit
B1412 Ambient Temperature Sensor Circuit
B1413 Evaporator Temperature Sensor Circuit
B1418 Emission Gas Sensor Circuit
B1423 Pressure Sensor Circuit
B1441 Air Mix Damper Control Servo Motor Circuit (Passenger Side)
B1442 Air Inlet Damper Control Servo Motor Circuit
B1443 Air Outlet Damper Control Servo Motor Circuit
B1446 Air Mix Damper Control Servo Motor Circuit (Driver Side)
B144A Air Outlet DEF Damper Control Servo Motor Circuit
B1453 Air Outlet Damper Cool Control Servo Motor Circuit (Driver Side)
B1454 Air Outlet Damper Cool Control Servo Motor Circuit (Passenger Side)
B1455 Air Outlet Damper FOOT/DEF Control Servo Motor Circuit (Driver Side)
B1461 Emission Gas NOx Sensor Circuit
B1471 A/C Inverter High Voltage Power Resource System Malfunction
B1472 A/C Inverter High Voltage Output System Malfunction
B1473 A/C Inverter Start-up Signal System Malfunction
B1474 A/C Inverter Malfunction
B1475 A/C Inverter Cooling / Heating System Malfunction
B1476 A/C Inverter Load System Malfunction
B1477 A/C Inverter Low Voltage Power Resource System Malfunction
B1497 Communication Malfunction (Bus Ic)
B1498 Communication Malfunction (A/C Inverter Local)
B14A8 Glass Temperature Sensor Circuit
B14A9 Glass Surroundings Temperature Sensor Circuit
B14AA Glass Humidity Sensor Circuit
B14B2 Lost Communication with Front Panel LIN
B14B8 Refrigerant Shortage
P1C7C-49 Hybrid/EV Battery Voltage System Isolation (A/C Area) Internal Electronic Failure
U0131 Lost Communication with Power Steering Control Module
U0142 Lost Communication with Main Body ECU
U0151 Lost Communication with Restraints Control Module
U0155 Lost Communication with Combination Meter
U0163 Lost Communication with Navigation Control Module
U0293 Lost Communication with HV ECU
AIR CONDITIONING SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [09/2018 - 05/2023]

DTC Code Description
B1411 Room Temperature Sensor Circuit
B1412 Ambient Temperature Sensor Circuit
B1413 Evaporator Temperature Sensor Circuit
B1418 Emission Gas Sensor Circuit
B1423 Pressure Sensor Circuit
B1441 Air Mix Damper Control Servo Motor Circuit (Passenger Side)
B1442 Air Inlet Damper Control Servo Motor Circuit
B1443 Air Outlet Damper Control Servo Motor Circuit
B1446 Air Mix Damper Control Servo Motor Circuit (Driver Side)
B144A Air Outlet DEF Damper Control Servo Motor Circuit
B1453 Air Outlet Damper Cool Control Servo Motor Circuit (Driver Side)
B1454 Air Outlet Damper Cool Control Servo Motor Circuit (Passenger Side)
B1455 Air Outlet Damper FOOT/DEF Control Servo Motor Circuit (Driver Side)
B1461 Emission Gas NOx Sensor Circuit
B1471 A/C Inverter High Voltage Power Resource System Malfunction
B1472 A/C Inverter High Voltage Output System Malfunction
B1473 A/C Inverter Start-up Signal System Malfunction
B1474 A/C Inverter Malfunction
B1475 A/C Inverter Cooling / Heating System Malfunction
B1476 A/C Inverter Load System Malfunction
B1477 A/C Inverter Low Voltage Power Resource System Malfunction
B1497 Communication Malfunction (Bus Ic)
B1498 Communication Malfunction (A/C Inverter Local)
B14A8 Glass Temperature Sensor Circuit
B14A9 Glass Surroundings Temperature Sensor Circuit
B14AA Glass Humidity Sensor Circuit
B14B2 Lost Communication with Front Panel LIN
B14B8 Refrigerant Shortage
P1C7C-49 Hybrid/EV Battery Voltage System Isolation (A/C Area) Internal Electronic Failure
U0131 Lost Communication with Power Steering Control Module
U0142 Lost Communication with Main Body ECU
U0151 Lost Communication with Restraints Control Module
U0155 Lost Communication with Combination Meter
U0163 Lost Communication with Navigation Control Module
U0293 Lost Communication with HV ECU
AIR CONDITIONING SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION [05/2023 - ]

DTC Code Description
B1411 Room Temperature Sensor Circuit
B1412 Ambient Temperature Sensor Circuit
B1413 Evaporator Temperature Sensor Circuit
B1418 Emission Gas Sensor Circuit
B1423 Pressure Sensor Circuit
B1441 Air Mix Damper Control Servo Motor Circuit (Passenger Side)
B1442 Air Inlet Damper Control Servo Motor Circuit
B1443 Air Outlet Damper Control Servo Motor Circuit
B1446 Air Mix Damper Control Servo Motor Circuit (Driver Side)
B144A Air Outlet DEF Damper Control Servo Motor Circuit
B1453 Air Outlet Damper Cool Control Servo Motor Circuit (Driver Side)
B1454 Air Outlet Damper Cool Control Servo Motor Circuit (Passenger Side)
B1455 Air Outlet Damper FOOT/DEF Control Servo Motor Circuit (Driver Side)
B1461 Emission Gas NOx Sensor Circuit
B1471 A/C Inverter High Voltage Power Resource System Malfunction
B1472 A/C Inverter High Voltage Output System Malfunction
B1473 A/C Inverter Start-up Signal System Malfunction
B1474 A/C Inverter Malfunction
B1475 A/C Inverter Cooling / Heating System Malfunction
B1476 A/C Inverter Load System Malfunction
B1477 A/C Inverter Low Voltage Power Resource System Malfunction
B1497 Communication Malfunction (Bus Ic)
B1498 Communication Malfunction (A/C Inverter Local)
B14A8 Glass Temperature Sensor Circuit
B14A9 Glass Surroundings Temperature Sensor Circuit
B14AA Glass Humidity Sensor Circuit
B14B2 Lost Communication with Front Panel LIN
B14B8 Refrigerant Shortage
P1C7C-49 Hybrid/EV Battery Voltage System Isolation (A/C Area) Internal Electronic Failure
U0131 Lost Communication with Power Steering Control Module
U0142 Lost Communication with Main Body ECU
U0151 Lost Communication with Restraints Control Module
U0155 Lost Communication with Combination Meter
U0163 Lost Communication with Navigation Control Module
U0293 Lost Communication with HV ECU