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

Air Conditioning System
DTC No.	Detection Item	DTC Detection Condition	Link
B1411	Room Temperature Sensor Circuit	Open or short in room temperature sensor circuit	Click here
B1412	Ambient Temperature Sensor Circuit	Open or short in ambient temperature sensor circuit	Click here
B1413	Evaporator Temperature Circuit or Evaporator Fin Thermistor	Open or short in evaporator temperature sensor circuit	Click here
B1422	Compressor Lock	Open or short in A/C lock sensor circuit	Click here
B1423	Open in Pressure Sensor Circuit / Abnormal Refrigerant Pressure	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)	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 (front passenger side air mix)	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 (mode)	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 (driver side air mix)	Click here
B1447	Air Mix Damper Control Servo Motor Circuit (Rear)	Air mix damper position sensor value does not change even if air conditioning amplifier assembly operates No. 3 air conditioning radiator damper servo sub-assembly	Click here
B1449	Air Outlet Damper Control Servo Motor Circuit (Rear)	Air outlet damper position sensor value does not change even if air conditioning amplifier assembly operates No. 2 air conditioning radiator damper servo sub-assembly	Click here
B1451	Compressor Solenoid Circuit	Open or short in compressor solenoid circuit	Click here
B1497	Communication Malfunction (Bus Ic)	Error or open in communication line	Click here
B14B2	Lost Communication with Front Panel LIN	Lost communication with air conditioning control assembly	Click here
B14B3	Lost Communication with Rear Panel LIN	Lost communication with cooler control switch assembly	Click here
B14B8	Refrigerant Shortage	The following condition is detected in the normal operation refrigerant shortage check: Amount of refrigerant is insufficient	Click here
B14B9	Open in Ion Generator Circuit	Open or short in ion generator circuit	Click here
B14BD	Refrigerant Overabundance Filling Malfunction	All of the following conditions are met 2 times or more in the same trip: The vehicle speed is 20 km/h or more The amount of compressor oil is within the insufficient compressor oil range for 60 seconds or more	Click here
U0100	Lost Communication With ECM/PCM "A"	No communication with ECM	Click here
U0131	Lost Communication With Power Steering Control Module	No communication with power steering ECU (rack and pinion power steering gear assembly)	Click here
U0142	Lost Communication With Body Control Module "B"	No communication with main body ECU (multiplex network body ECU)	Click here
U0151	Lost Communication With Restraints Control Module	No communication with airbag sensor assembly	Click here
U0155	Lost Communication With Instrument Panel Cluster (IPC) Control Module	No communication with combination meter assembly	Click here
U0163	Lost Communication With Navigation Control Module	No communication with air conditioning control panel (radio and display receiver assembly)	Click here