AIR CONDITIONING SYSTEM(for Manual Air Conditioning System) DIAGNOSTIC TROUBLE CODE CHART

AIR CONDITIONING SYSTEM
DTC No.	Detection Item	DTC Detection Condition	Link
B1412	Ambient Temperature Sensor Circuit	When the air conditioning amplifier assembly receives out-of-range 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	Any of the following conditions is met: Open in air conditioner pressure sensor circuit (Only when the outside temperature is 5 °C (41°F) or more) Short in air conditioner pressure sensor circuit (Only when the outside temperature is 5 °C (41°F) or more) 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) (Only when the outside temperature is 5 °C (41°F) or more) for HFC-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) (Only when the outside temperature is 5 °C (41°F) or more)	Click here
B1441	Air Mix Damper Control Servo Motor Circuit (Passenger Side)	Any of the following conditions is met: No. 1 air conditioning radiator damper servo sub assembly (upper air mix) drive terminal is open circuit No. 1 air conditioning radiator damper servo sub assembly (upper air mix) drive terminal is short circuit	Click here
B1442	Air Inlet Damper Control Servo Motor Circuit	Any of the following conditions is met: No. 1 blower motor damper servo sub-assembly (fresh/recirculation) drive terminal is open circuit No. 1 blower motor damper servo sub-assembly (fresh/recirculation) drive terminal is short circuit	Click here
B1443	Air Outlet Damper Control Servo Motor Circuit	Any of the following conditions is met: No. 2 air conditioning radiator damper servo sub-assembly (mode switching) drive terminal is open circuit No. 2 air conditioning radiator damper servo sub-assembly (mode switching) drive terminal is short circuit	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
B1454	Air Outlet Damper Cool Control Servo Motor Circuit (Passenger Side)	Any of the following conditions is met: No. 1 air conditioning radiator damper servo sub-assembly (lower air mix) drive terminal is open circuit No. 1 air conditioning radiator damper servo sub-assembly (lower air mix) drive terminal is short circuit	Click here
B14B2	Lost Communication with Front Panel LIN	Lost communication with air conditioning control assembly	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