Air Conditioning System
WARNING: This page is about a different car, the 2009 Lexus IS 350 and 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
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 |
| B1418/18 | Exhaust Gas Sensor Circuit |
| B1421/21 | Solar Sensor Circuit (Passenger Side) |
| B1422/22 | Compressor Lock Sensor Circuit |
| B1423/23 | Pressure Sensor Circuit |
| B1424/24 | Solar Sensor Circuit (Driver Side) |
| 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 |
| B1445/45 | Front Passenger Seat Side Cool Air Bypass Damper Control Servo Motor Circuit |
| B1446/46 | Air Mix Damper Control Servo Motor Circuit (Driver Side) |
| B1451/51 | Compressor Solenoid Circuit |
| B1461/61 | Emission Gas NOx Sensor Circuit |
| B1497/97 | BUS IC Communication Malfunction |
| B1499/99 | Multiplex Communication Circuit |