HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for HV Model): DIAGNOSTIC TROUBLE CODE CHART; 2020 MY RAV4 HV [06/2020

Last Modified: 05-08-2025	6.11:8.1.0	Doc ID: RM100000001PCH8
Model Year Start: 2020	Model: RAV4 HV	Prod Date Range: [06/2020 - 08/2020]
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for HV Model): DIAGNOSTIC TROUBLE CODE CHART; 2020 MY RAV4 HV [06/2020 - 08/2020]

DIAGNOSTIC TROUBLE CODE CHART

AIR CONDITIONING SYSTEM

DTC No.	Detection Item	DTC Detection Condition
B1411	Room Temperature Sensor Circuit	Diagnosis condition: Ambient temperature is -30°C (-22°F) or more Malfunction status: Open or short in room temperature sensor circuit Detection time: None (Present malfunction), continuously for 4 seconds or more (Past malfunction)
B1412	Ambient Temperature Sensor Circuit	Diagnosis condition: None Malfunction status: Open or short in ambient temperature sensor circuit Detection time: None (Present malfunction), continuously for 4 seconds or more (Past malfunction)
B1413	Evaporator Temperature Sensor Circuit	Diagnosis condition: None Malfunction status: Open or short in evaporator temperature sensor circuit Detection time: None (Present malfunction), continuously for 4 seconds or more (Past malfunction)
B1423	Pressure Sensor Circuit	Diagnosis condition: Ignition switch ON Malfunction Status: Refrigerant pressure signal malfunction Detection time: Continuously for 4 seconds or more (Present malfunction)
B1441	Air Mix Damper Control Servo Motor Circuit (Passenger Side)	Diagnosis condition: During No. 1 air conditioning radiator damper servo sub-assembly (front passenger side air mix) operation Malfunction status: The damper servo operation request signal is output but the position information of the servo does not change or servo is malfunctioning Detection time: Continuously for 30 seconds or more
B1442	Air Inlet Damper Control Servo Motor Circuit	Diagnosis condition: During No. 1 blower damper servo sub-assembly operation Malfunction status: The damper servo operation request signal is output but the position information of the servo does not change or servo is malfunctioning Detection time: Continuously for 30 seconds or more
B1443	Air Outlet Damper Control Servo Motor Circuit	Diagnosis condition: During No. 3 air conditioning radiator damper servo sub-assembly (driver side mode)1 or No. 1 air conditioning radiator damper servo sub-assembly (front mode)2 operation Malfunction status: The damper servo operation request signal is output but the position information of the servo does not change or servo is malfunctioning Detection time: Continuously for 30 seconds or more
B1446	Air Mix Damper Control Servo Motor Circuit (Driver Side)	Diagnosis condition: During No. 1 air conditioning radiator damper servo sub-assembly (driver side air mix) operation Malfunction status: The damper servo operation request signal is output but the position information of the servo does not change or servo is malfunctioning Detection time: Continuously for 30 seconds or more
B1448	Passenger Side FACE Servo Motor Circuit	Diagnosis condition: During No. 3 air conditioning radiator damper servo sub-assembly (front passenger side mode) operation Malfunction status: The damper servo operation request signal is output but the position information of the servo does not change or servo is malfunctioning Detection time: Continuously for 30 seconds or more
B1449	Air Outlet Damper Control Servo Motor Circuit (Rear)	Diagnosis condition: During No. 2 air conditioning radiator damper servo sub-assembly (rear mode) operation Malfunction status: The damper servo operation request signal is output but the position information of the servo does not change or servo is malfunctioning Detection time: Continuously for 30 seconds or more
B1471	A/C Inverter High Voltage Power Resource System Malfunction	Diagnosis condition: Ignition switch ON (READY) Malfunction status: Open or short in A/C inverter high voltage power resource system Detection time: None
B1472	A/C Inverter High Voltage Output System Malfunction	Diagnosis condition: Compressor operation Malfunction status: Open or short in A/C inverter high voltage output system Detection time: None
B1474	A/C Inverter Malfunction	Diagnosis condition: Ignition switch ON (READY) Malfunction status: The inverter internal temperature is outside the specified range (exceeds the maximum) Detection time: None
B1475	A/C Inverter Cooling / Heating System Malfunction	Diagnosis condition: Ignition switch ON (READY) Malfunction status: Outside base temperature in the inverter (unreasonable temperature) Detection time: None
B1476	A/C Inverter Load System Malfunction	Diagnosis condition: Compressor operation request Malfunction status: Motor rotation load while the compressor is operating is too large or too small Detection time: None
B1497	Communication Malfunction (Bus Ic)	Diagnosis condition: None Malfunction status: Error or open in communication line between air conditioning amplifier assembly and servo motor
B1498	Communication Malfunction (A/C Inverter Local)	Diagnosis condition: Ignition switch ON (READY) Malfunction status: Error or open in communication line between the hybrid vehicle control ECU assembly and compressor with motor assembly or high-voltage power source shut off
B14A8	Glass Temperature Sensor Circuit	Diagnosis condition: Ignition switch ON Malfunction status: Communication between rain sensor (glass humidity sensor) and main body ECU (multiplex network body ECU) is abnormal or stops Detection time: After ignition switch is turned to ON and 10 seconds elapse, continuously for 5 seconds or more
B14A9	Glass Surroundings Temperature Sensor Circuit	Diagnosis condition: Ignition switch ON Malfunction status: Communication between rain sensor (glass humidity sensor) and main body ECU (multiplex network body ECU) is abnormal or stops Detection time: After ignition switch is turned to ON and 10 seconds elapse, continuously for 5 seconds or more
B14AA	Glass Humidity Sensor Circuit	Diagnosis condition: Ignition switch ON Malfunction status: Communication between rain sensor (glass humidity sensor) and main body ECU (multiplex network body ECU) is abnormal or stops Detection time: After ignition switch is turned to ON and 10 seconds elapse, continuously for 5 seconds or more
B14B2	Lost Communication with Front Panel LIN	Lost communication with air conditioning control assembly Diagnosis condition: Ignition switch ON Malfunction status: Lost communication with air conditioning control assembly Detection time: Continuously for 10 seconds or more
B14B8	Refrigerant Shortage	Diagnosis condition: The amount of refrigerant is judged to be insufficient in normal operation Malfunction status: When following condition is detected in refrigerant shortage check in normal operation; Amount of refrigerant is insufficient Detection time: During air conditioning system operation for 10 minutes or more
P1C7C49	Hybrid/EV Battery Voltage System Isolation (A/C Area) Internal Electronic Failure	High voltage system insulation malfunction
U0100	Lost Communication with ECM / PCM "A"	No communication with ECM
U0131	Lost Communication with Power Steering Control Module	No communication with rack and pinion power steering gear assembly (power steering ECU assembly)
U0142	Lost Communication with Body Control Module "B"	No communication with main body ECU (multiplex network body ECU)
U0151	Lost Communication with Restraints Control Module	No communication with airbag sensor assembly
U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	No communication with combination meter assembly
U0293	Lost Communication with HV ECU	No communication with hybrid vehicle control ECU assembly