Diagnostic Trouble Code Chart
WARNING: This page is about a different car, the 2011 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
AIR CONDITIONING SYSTEM (FOR AUTOMATIC AIR CONDITIONING SYSTEM)
| DTC Code | Detection Item | Trouble Area | Memory *4 | See |
|---|---|---|---|---|
| B1411/11*1 | Room Temperature Sensor Circuit | 1. Room temperature sensor 2. Harness or connector between room temperature sensor and A/C amplifier 3. A/C amplifier |
Memorized (8.5 min. or more) |
Refer to DTC B1411/11: Room Temperature Sensor Circuit |
| B1412/12*2 | Ambient Temperature Sensor Circuit | 1. Ambient temperature sensor 2. Harness or connector between ambient temperature sensor and combination meter 3. Combination meter 4. CAN communication system 5. A/C amplifier |
Memorized (8.5 min. or more) |
Refer to DTC B1412/12: Ambient Temperature Sensor Circuit |
| B1413/13 | Evaporator Temperature Sensor Circuit | 1. Air conditioning harness 2. Evaporator temperature sensor 3. A/C amplifier |
Memorized (8.5 min. or more) |
Refer to DTC B1413/13: Evaporator Temperature Sensor Circuit |
| B1421/21*3 | Solar Sensor Circuit (Passenger Side) | 1. Solar sensor 2. Harness or connector between solar sensor and A/C amplifier 3. A/C amplifier |
Memorized (8.5 min. or more) (only when circuit is shorted) |
Refer to DTC B1421/21: Solar Sensor Circuit (Passenger Side) |
| B1423/23 | Pressure Sensor Circuit | 1. A/C pressure sensor 2. Harness or connector between A/C pressure sensor and A/C amplifier 3. A/C amplifier 4. Expansion valve (blocked, stuck) 5. Condenser (blocked, deterioration of cooling capacity due to dirt) 6. Cooler dryer (moisture in the refrigerant cycle cannot be absorbed) 7. Cooling fan system (condenser cannot be cooled down) 8. A/C system (leaks, blocked) |
- | Refer to DTC B1423/23: Pressure Sensor Circuit |
| B1441/41 | Air Mix Damper Control Servo Motor Circuit (Passenger Side) | 1. A/C amplifier 2. Air conditioning harness 3. Air mix control servo motor |
Memorized (30 sec.) |
Refer to DTC B1441/41: Air Mix Damper Control Servo Motor Circuit (Passenger Side) |
| B1442/42 | Air Inlet Damper Control Servo Motor Circuit | 1. A/C amplifier 2. Air conditioning harness 3. Air inlet control servo motor |
Memorized (30 sec.) |
Refer to DTC B1442/42: Air Inlet Damper Control Servo Motor Circuit |
| B1443/43 | Air Outlet Damper Control Servo Motor Circuit | 1. A/C amplifier 2. Air conditioning harness 3. Air outlet control servo motor |
Memorized (30 sec.) |
Refer to DTC B1443/43: Air Outlet Damper Control Servo Motor Circuit |
| B1451/51 | Compressor Solenoid Circuit | 1. Compressor assembly with pulley (compressor solenoid) 2. Harness or connector between A/C amplifier and compressor assembly with pulley (compressor solenoid) 3. A/C amplifier |
- | Refer to DTC B1451/51: Compressor Solenoid Circuit |
| B1479/79*5 | Flow Sensor Circuit | 1. Compressor assembly with pulley (A/C flow sensor) 2. Harness or connector between compressor assembly with pulley (A/C flow sensor) and A/C amplifier 3. A/C amplifier |
Memorized (4 sec. or more) |
Refer to DTC B1479/79: Flow Sensor Circuit |
| B1497/97 | BUS IC Communication Malfunction | 1. Air conditioning harness 2. A/C amplifier |
Memorized (10 sec. or more) |
Refer to DTC B1497/97: BUS IC Communication Malfunction |
| B1499/99 | Multiplex Communication Circuit | CAN communication system | Memorized | Refer to DTC B1499/99: Multiplex Communication Circuit |
*1: If the cabin temperature is approximately -18.6°C (-1.48°F) or lower, DTC B1411/11 may be output even though the system is normal.
*2: If the ambient temperature is approximately -52.9°C (-63.22°F) or lower, DTC B1412/12 may be output even though the system is normal.
*3: If the check is performed in a dark place, DTC B1421/21 (solar sensor circuit abnormal) may be output even though the system is normal.
*4: The A/C amplifier memorizes the DTC of the respective malfunction if it has occurred for the period of time indicated in the brackets.
*5: for 2ZR-FE