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Home >> Toyota >> 2021 >> Prius XLE AWD-e >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System - Diagnostics - Introduction (2 Of 2) >> Air Conditioning System >> Diagnostic Trouble Code Chart [12/2018 - 08/2019] >> Diagnostic Trouble Code Chart [12/2018 - 08/2019]
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Diagnostic Trouble Code Chart [12/2018 - 08/2019]

AIR CONDITIONING SYSTEM

DTC No. Detection Item DTC Detection Condition Link
B1245 Lost Communication with Wiper ECU LIN Lost communication with windshield wiper relay assembly Refer to DTC B1245: Lost Communication with Wiper ECU LIN [11/2015 - 07/2020]
B1279 Lost Communication with Humidity/Rain Sensor LIN Lost communication with air conditioning thermistor assembly Refer to DTC B1279: Lost Communication with Humidity/Rain Sensor LIN [11/2015 - 07/2020]
B1373 Lost Communication with Wiper System LIN BUS Lost communication with wiper system LIN communication line Refer to DTC B1373: Lost Communication with Wiper System LIN BUS [11/2015 - 07/2020]
B1411/11 Room Temperature Sensor Circuit Open or short in room temperature sensor circuit Refer to DTC B1411/11: Room Temperature Sensor Circuit [11/2015 - ]
B1412/12 Ambient Temperature Sensor Circuit Open or short in ambient temperature sensor circuit Refer to DTC B1412/12: Ambient Temperature Sensor Circuit [11/2015 - ]
B1413/13 Evaporator Temperature Sensor Circuit Open or short in evaporator temperature sensor circuit Refer to DTC B1413/13: Evaporator Temperature Sensor Circuit [12/2018 - ]
B1423 Pressure Sensor Circuit
  • Open or short in air conditioner pressure sensor circuit
  • Refrigerant pressure on high pressure side is extremely low (176 kPaG (1.8 kgf/cm2 , 26 psi) or less) or extremely high (3025 kPaG (30.8 kgf/cm2 , 439 psi) or more)
 Refer to DTC B1423: Pressure Sensor Circuit [11/2015 - 07/2020]
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. 2 air conditioning radiator damper servo sub-assembly Refer to DTC B1441: Air Mix Damper Control Servo Motor Circuit (Passenger Side) [12/2018 - ]
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 Refer to DTC B1442: Air Inlet Damper Control Servo Motor Circuit [12/2018 - ]
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 Refer to DTC B1443: Air Outlet Damper Control Servo Motor Circuit [12/2018 - ]
B1448 Passenger Side FACE Servo Motor Circuit 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 Refer to DTC B1448: Passenger Side FACE Servo Motor Circuit [12/2018 - ]
B1449 Rear Air Outlet Damper Control Servo Motor Circuit 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 Refer to DTC B1449: Rear Air Outlet Damper Control Servo Motor Circuit [12/2018 - ]
B1471 A/C Inverter High Voltage Power Resource System Malfunction
  • Open or short in A/C inverter high voltage power resource system
  • Boost inverter malfunctioning
 Refer to DTC B1471: A/C Inverter High Voltage Power Resource System Malfunction [11/2015 - ]
B1472/72 A/C Inverter High Voltage Output System Malfunction Open or short in A/C inverter high voltage output circuit Refer to DTC B1472/72: A/C Inverter High Voltage Output System Malfunction [11/2015 - ]
B1473 A/C Inverter Start-up Signal System Malfunction Open or short in A/C inverter start-up signal circuit Refer to DTC B1473: A/C Inverter Start-up Signal System Malfunction [11/2015 - ]
B1474/74 A/C Inverter Malfunction A/C inverter malfunction Refer to DTC B1474/74: A/C Inverter Malfunction [11/2015 - ]
B1475 A/C Inverter Cooling / Heating System Malfunction A/C inverter temperature outside specified range (temperature too high) or open or short to ground in temperature sensor circuit Refer to DTC B1475: A/C Inverter Cooling / Heating System Malfunction [11/2015 - 07/2020]
B1476/76 A/C Inverter Load System Malfunction Motor rotation load while compressor is operating is too large or too small Refer to DTC B1476/76: A/C Inverter Load System Malfunction [11/2015 - 07/2020]
B1477/77 A/C Inverter Low Voltage Power Resource System Malfunction Open or short to ground in inverter control power voltage circuit Refer to DTC B1477/77: A/C Inverter Low Voltage Power Resource System Malfunction [11/2015 - ]
B1497 BUS IC Communication Malfunction Error or open in communication line Refer to DTC B1497: BUS IC Communication Malfunction [12/2018 - ]
B1498 Communication Malfunction (A/C Inverter Local)
  • Error or open in communication line between the hybrid vehicle control ECU and compressor with motor assembly
  • High-voltage power source shut off
 Refer to DTC B1498: Communication Malfunction (A/C Inverter Local) [11/2015 - ]
B14A2 Driver Side Solar Sensor Short Circuit Short in cooler (solar sensor) thermistor circuit Refer to DTC B14A2: Driver Side Solar Sensor Short Circuit [11/2015 - ]
B14A8 Glass Temperature Sensor Circuit Open or short in glass temperature sensor circuit Refer to DTC B14A8: Glass Temperature Sensor Circuit; DTC B14A9: Glass Surroundings Temperature Sensor Circuit; DTC B14AA: Glass Humidity Sensor Circuit [11/2015 - 07/2020]
B14A9 Glass Surroundings Temperature Sensor Circuit Open or short in glass surroundings temperature sensor circuit Refer to DTC B14A8: Glass Temperature Sensor Circuit; DTC B14A9: Glass Surroundings Temperature Sensor Circuit; DTC B14AA: Glass Humidity Sensor Circuit [11/2015 - 07/2020]
B14AA Glass Humidity Sensor Circuit Open or short in glass humidity sensor circuit Refer to DTC B14A8: Glass Temperature Sensor Circuit; DTC B14A9: Glass Surroundings Temperature Sensor Circuit; DTC B14AA: Glass Humidity Sensor Circuit [11/2015 - 07/2020]
B14B2 Lost Communication with Front Panel LIN Lost communication with air conditioning control assembly Refer to DTC B14B2: Lost Communication with Front Panel LIN [11/2015 - ]
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 [11/2015 - 07/2020]
P1C7C-49 Hybrid/EV Battery Voltage System Isolation (A/C Area) Internal Electronic Failure High voltage system insulation malfunction Refer to DTC P1C7C-49: Hybrid/EV Battery Voltage System Isolation (A/C Area) Internal Electronic Failure [11/2015 - 07/2020]
U0131 Lost Communication with Electric Power Steering ECU No communication with power steering ECU assembly Refer to 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; DTC U0293: Lost Communication with HV ECU [11/2017 - 08/2019]
U0142 Lost Communication with Main Body ECU No communication with main body ECU (multiplex network body ECU) Refer to 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; DTC U0293: Lost Communication with HV ECU [11/2017 - 08/2019]
U0151 Lost Communication with Restraints Control Module No communication with airbag sensor assembly Refer to 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; DTC U0293: Lost Communication with HV ECU [11/2017 - 08/2019]
U0155 Lost Communication with Combination Meter No communication with combination meter assembly Refer to 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; DTC U0293: Lost Communication with HV ECU [11/2017 - 08/2019]
U0163 Lost Communication with Navigation Control Module No communication with navigation receiver assembly* Refer to 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; DTC U0293: Lost Communication with HV ECU [11/2017 - 08/2019]
U0293 Lost Communication with HV ECU No communication with hybrid vehicle control ECU Refer to 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; DTC U0293: Lost Communication with HV ECU [11/2017 - 08/2019]
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