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Home >> Lexus >> 2016 >> IS 350 Base, AWD >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating / Air Conditioning System - Diagnostics - Introduction (2 Of 2) >> Air Conditioning System >> Diagnostic Trouble Code Chart [09/2019 - 09/2020] >> Diagnostic Trouble Code Chart [09/2019 - 09/2020]

Diagnostic Trouble Code Chart [09/2019 - 09/2020]

AIR CONDITIONING SYSTEM

DTC No. Detection Item DTC Detection Condition Link
B1411-11 Room Temperature Sensor Circuit Open or short in room temperature sensor circuit Refer to DTC B1411-11: Room Temperature Sensor Circuit [04/2013 - ]
B1412-12 Ambient Temperature Sensor Circuit Open or short in ambient temperature sensor circuit Refer to DTC B1412-12: Ambient Temperature Sensor Circuit [09/2018 - ]
B1413-13 Evaporator Temperature Sensor Circuit Open or short in evaporator temperature sensor circuit Refer to DTC B1413-13: Evaporator Temperature Sensor Circuit [04/2013 - 09/2020]
B1422-22 Compressor Lock Sensor Circuit Open or short in A/C lock sensor circuit Refer to DTC B1422-22: Compressor Lock Sensor Circuit [09/2019 - 09/2020]
B1423-23 Pressure Sensor Circuit
  • Open or short in air conditioner pressure sensor circuit
  • Refrigerant pressure on high pressure side is extremely low (176 kPa (1.8 kgf/cm2 , 26 psi) or less) or extremely high (3025 kPa (30.8 kgf/cm2 , 439 psi) or more)
 Refer to DTC B1423-23: Pressure Sensor Circuit [10/2017 - 11/2021]
B1441-41 Air Mix Damper Control Servo Motor Circuit (Passenger Side) Air mix damper position sensor value does not change even if air conditioning amplifier assembly operates No. 4 air conditioning radiator damper servo sub-assembly (front passenger side lower air mix) Refer to DTC B1441-41: Air Mix Damper Control Servo Motor Circuit (Passenger Side) [04/2013 - 09/2020]
B1442-42 Air Inlet Damper Control Servo Motor Circuit Air inlet damper position sensor value does not change even if air conditioning amplifier assembly operates No. 1 blower damper servo sub-assembly Refer to DTC B1442-42: Air Inlet Damper Control Servo Motor Circuit [04/2013 - 09/2020]
B1443-43 Air Outlet Damper Control Servo Motor Circuit Air outlet damper position sensor value does not change even if air conditioning amplifier assembly operates No. 3 air conditioning radiator damper servo sub-assembly Refer to DTC B1443-43: Air Outlet Damper Control Servo Motor Circuit [04/2013 - 09/2020]
B1446-46 Air Mix Damper Control Servo Motor Circuit (Driver Side) Air mix damper position sensor value does not change even if air conditioning amplifier assembly operates No. 5 air conditioning radiator damper servo sub-assembly (driver side lower air mix) Refer to DTC B1446-46: Air Mix Damper Control Servo Motor Circuit (Driver Side) [04/2013 - 09/2020]
B1451-51 Compressor Solenoid Circuit Open or short in compressor solenoid circuit Refer to DTC B1451-51: Compressor Solenoid Circuit [09/2019 - 09/2020]
B1453-53 Driver Side Air Outlet Damper COOL Control Servo Motor Circuit Air mix damper position sensor value does not change even if air conditioning amplifier assembly operates No. 2 air conditioning radiator damper servo sub-assembly (driver side upper air mix) Refer to DTC B1453-53: Driver Side Air Outlet Damper COOL Control Servo Motor Circuit [04/2013 - 09/2020]
B1454-54 Passenger Side Air Outlet Damper COOL Control Servo Motor Circuit Air mix damper position sensor value does not change even if air conditioning amplifier assembly operates No. 2 air conditioning radiator damper servo sub-assembly (front passenger side upper air mix) Refer to DTC B1454-54: Passenger Side Air Outlet Damper COOL Control Servo Motor Circuit [04/2013 - 09/2020]
B1455-55 Driver Side Air Outlet Damper FOOT/DEF Control Servo Motor Circuit Air outlet damper position sensor value does not change even if air conditioning amplifier assembly operates No. 1 air conditioning radiator damper servo sub-assembly Refer to DTC B1455-55: Driver Side Air Outlet Damper FOOT/DEF Control Servo Motor Circuit [04/2013 - 09/2020]
B1497-97 BUS IC Communication Malfunction Error or open in communication line Refer to DTC B1497-97: BUS IC Communication Malfunction [04/2013 - 09/2020]
B14B2 Lost Communication with Front Panel LIN Lost communication with air conditioning control assembly Refer to DTC B14B2: Lost Communication with Front Panel LIN [04/2013 - ]
B14B8 Refrigerant Shortage When following condition is detected in refrigerant shortage check in normal operation:
Amount of refrigerant is insufficient		 Refer to DTC B14B8: Refrigerant Shortage [04/2013 - 09/2022]
U0100 Lost Communication with ECM No communication with ECM Refer to DTC U0100: Lost Communication with ECM; DTC U0131: Lost Communication with Electric Power Steering ECU; DTC U0142: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Restraints Control Module; DTC U0155: Lost Communication with Combination Meter; DTC U0163: Lost Communication with Navigation Control Module [04/2013 - ]
U0131 Lost Communication with Electric Power Steering ECU No communication with power steering ECU assembly Refer to DTC U0100: Lost Communication with ECM; DTC U0131: Lost Communication with Electric Power Steering ECU; DTC U0142: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Restraints Control Module; DTC U0155: Lost Communication with Combination Meter; DTC U0163: Lost Communication with Navigation Control Module [04/2013 - ]
U0142 Lost Communication with Main Body ECU No communication with main body ECU (multiplex network body ECU) Refer to DTC U0100: Lost Communication with ECM; DTC U0131: Lost Communication with Electric Power Steering ECU; DTC U0142: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Restraints Control Module; DTC U0155: Lost Communication with Combination Meter; DTC U0163: Lost Communication with Navigation Control Module [04/2013 - ]
U0151 Lost Communication with Restraints Control Module No communication with airbag sensor assembly Refer to DTC U0100: Lost Communication with ECM; DTC U0131: Lost Communication with Electric Power Steering ECU; DTC U0142: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Restraints Control Module; DTC U0155: Lost Communication with Combination Meter; DTC U0163: Lost Communication with Navigation Control Module [04/2013 - ]
U0155 Lost Communication with Combination Meter No communication with combination meter assembly Refer to DTC U0100: Lost Communication with ECM; DTC U0131: Lost Communication with Electric Power Steering ECU; DTC U0142: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Restraints Control Module; DTC U0155: Lost Communication with Combination Meter; DTC U0163: Lost Communication with Navigation Control Module [04/2013 - ]
U0163 Lost Communication with Navigation Control Module No communication with radio receiver assembly Refer to DTC U0100: Lost Communication with ECM; DTC U0131: Lost Communication with Electric Power Steering ECU; DTC U0142: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Restraints Control Module; DTC U0155: Lost Communication with Combination Meter; DTC U0163: Lost Communication with Navigation Control Module [04/2013 - ]
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