AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System with Side-mounted Air Conditioner Pressure Sensor) DIAGNOSTIC TROUBLE CODE CHART

AIR CONDITIONING SYSTEM
DTC No.	Detection Item	DTC Detection Condition	Link
B1411	Room Temperature Sensor Circuit	Any of the following conditions is met: Open in cooler thermistor (room temperature sensor) circuit Short in cooler thermistor (room temperature sensor) circuit	Click here
B1412	Ambient Temperature Sensor Circuit	When the air conditioning amplifier assembly cannot receive outside temperature sensor data from the combination meter assembly.	Click here
B1413	Evaporator Temperature Sensor Circuit	Any of the following conditions is met: Open in No. 1 cooler thermistor (evaporator temperature sensor) circuit Short in No. 1 cooler thermistor (evaporator temperature sensor) circuit	Click here
B1423	Pressure Sensor Circuit	Open in air conditioner pressure sensor circuit Short in air conditioner pressure sensor circuit for HFC-134a (R134a): 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) for HFO-1234yf (R1234yf): Refrigerant pressure on high pressure side is extremely low (195 kPa (2.0 kgf/cm², 28 psi) or less) or extremely high (2812 kPa (28.7 kgf/cm², 408 psi) or more)	Click here
B1441	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. 1 air conditioning radiator damper servo sub-assembly	Click here
B1442	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	Click here
B1443	Air Outlet Damper 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	Click here
B1446	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. 1 air conditioning radiator damper servo sub-assembly	Click here
B1451	Compressor Solenoid Circuit	Any of the following conditions is met: Open in compressor solenoid circuit Short in compressor solenoid circuit	Click here
B1497	Communication Malfunction (Bus Ic)	Any of the following conditions is met: Error in communication line Open in communication line	Click here
B14B2	Lost Communication with Front Panel LIN	Lost communication with air conditioning control assembly	Click here
B14B8	Refrigerant Shortage	When following condition is detected in refrigerant shortage check in normal operation: Amount of refrigerant is insufficient	Click here
B14B9	Open in Ion Generator Circuit	Open in ion generator sub-assembly circuit	Click here
U0100	Lost Communication with ECM	No communication with ECM	Click here
U0131	Lost Communication with Electric Power Steering ECU	No communication with power steering ECU assembly	Click here
U0142	Lost Communication with Main Body ECU	No communication with main body ECU (multiplex network body ECU)	Click here
U0155	Lost Communication with Combination Meter	No communication with combination meter assembly	Click here