AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System) DIAGNOSTIC TROUBLE CODE CHART
Tech Tips
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If a trouble code is output during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" below.
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*1: The air conditioning amplifier stores the DTC of the respective malfunction that has been detected for the period of time indicated in parentheses.
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*2: For vehicles without an air conditioning system, DTCs B1413 and B1423 are always output and DTC B1451 may be output. As this is not a malfunction, troubleshooting is not necessary.
| DTC Code | Detection Item | Memory*1 | Diagnostic Note | See page |
|---|---|---|---|---|
| B1411/11 | Room Temperature Sensor Circuit | Stored (4 seconds or more) |
If the front room temperature is approx. -18.6°C (- 1.48°F) or less, DTC B1411/11 may be stored even though the system is normal. | |
| B1412/12 | Ambient Temperature Sensor Circuit | Stored (4 seconds or more) |
If the ambient temperature is approx. -52.9°C (- 63.22°F) or less, DTC B1412/12 may be stored even though the system is normal. | |
| B1413/13*2 | Evaporator Temperature Sensor Circuit | Stored (4 seconds or more) |
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| B1423/23*2 | Pressure Sensor Circuit | Stored (4 seconds or more) |
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| B1441/41 | Air Mix Damper Control Servo Motor Circuit (Passenger Side) | Stored (30 seconds or more) |
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| B1442/42 | Air Inlet Damper Control Servo Motor Circuit | Stored (30 seconds or more) |
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| B1443/43 | Air Outlet Damper Control Servo Motor Circuit | Stored (30 seconds or more) |
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| B1446/46 | Air Mix Damper Control Servo Motor Circuit (Driver Side) | Stored (30 seconds or more) |
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| B1451/51*2 | Compressor Solenoid Circuit | Stored (30 seconds or more) |
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| B1497/97 | BUS IC Communication Malfunction | Stored (10 seconds or more) |
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| B14A2 | Driver Side Solar Sensor Short Circuit | Stored (4 seconds or more) |
If the check is performed in a dark place, DTC B14A3 (front passenger side solar sensor short circuit) may also be stored. | |
| B14A3 | Front Passenger Side Solar Sensor Short Circuit | Stored (4 seconds or more) |
If the check is performed in a dark place, DTC B14A2 (driver side solar sensor short circuit) may also be stored. | |
| U0100 | Lost Communication with ECM | - | - | |
| U0131 | Lost Communication with Power Steering Control Module | - | - | |
| U0142 | Lost Communication with Main Body ECU | - | - | |
| U0155 | Lost Communication with Combination Meter | - | - |