LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2017 >> Mirai >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Heating / Air Conditioning DTCS >> Air Conditioning System
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Air Conditioning System

AIR CONDITIONING SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

DTC Code Description
B1411/11 Room Temperature Sensor Circuit
B1412/12 Ambient Temperature Sensor Circuit
B1413/13 Evaporator Temperature Sensor Circuit
B1414/14 Water Temperature Circuit
B1423/23 Pressure Sensor Circuit
B1441/41 Air Mix Damper Control Servo Motor Circuit (Passenger Side)
B1442/42 Air Inlet Damper Control Servo Motor Circuit
B1443/43 Air Outlet Damper Control Servo Motor Circuit
B1446/46 Air Mix Damper Control Servo Motor Circuit (Driver Side)
B1471/71 A/C Inverter High Voltage Power Resource System Malfunction
B1472/72 A/C Inverter High Voltage Output System Malfunction
B1473/73 A/C Inverter Start-up Signal System Malfunction
B1474/74 A/C Inverter Malfunction
B1475/75 A/C Inverter Cooling / Heating System Malfunction
B1476/76 A/C Inverter Load System Malfunction
B1477/77 A/C Inverter Low Voltage Power Resource System Malfunction
B1497/97 BUS IC Communication Malfunction
B1498/98 Communication Malfunction (A/C Inverter Local)
B14A8 Glass Temperature Sensor Circuit
B14A9 Glass Surroundings Temperature Sensor Circuit
B14AA Glass Humidity Sensor Circuit
B14AB Heating Three-way Valve Circuit
B14B8 Refrigerant Shortage
B14C4 Electric Water Heater Circuit
B14C7 Electric Water Pump Circuit
P0AA6-611 Hybrid Battery Voltage System Isolation Fault
U0131 Lost Communication with Electric Power Steering ECU
U0142 Lost Communication with Main Body ECU
U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module
U0293 Lost Communication with EV ECU
U1114 Lost Communication with Main Switch Module