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A clear example of climate control diagnostics with errors. If the heater has started to work poorly, do not rush to thoughtlessly disassemble everything there. In certain cases, you can accurately identify the problem yourself. And then work with a specific malfunction, to eliminate it. As promised, the list of error codes, climate control: 00 - No errors 11 - Cabin Air Temperature Sensor 12 - Ambient Temperature Sensor 13 - Evaporator Temperature Sensor 14 - Coolant Temperature Sensor 21 - Sunlight Sensor (Passenger Side) 22 - Compressor Lock Sensor 23 - Pressure Sensor (Refrigerant) 24 - Sunlight Sensor (Driver Side) 31 - Air Mixture Door Position Sensor (Passenger Side) 32 - Air Intake Door Position Sensor 33 - Air Outlet Damper Position Sensor Circuit 41 - Air Mixture Door Servo (Passenger Side) 42 - Air Intake Door Servo 43 - Air Outlet Damper Control Servo Motor Circuit 46 - Air Mixture Door Servo (Driver Side) 51 - Compressor Solenoid Circuit 62 - Air Humidity Sensor (Not in Camry) 71 - A/C Inverter High Voltage Power Resource System Malfunction 72 — A/C Inverter High Voltage Output System Malfunction 73 — A/C Inverter Start-up Signal System Malfunction 75 — A/C Inverter Cooling / Heating System Malfunction 76 — A/C Inverter Load System Malfunction 77 — A/C Inverter Low Voltage Power Resource System Malfunction 97 — BUS IC Communication Malfunction 98 — Communication Malfunction (A/C Inverter Local) 99 — Multiplex Communication Circuit Codes 21 and 24 may appear if diagnostics are performed in a dark room or at night.