Diagnostic Trouble Code Chart
WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to table below.
Air conditioning amplifier
HVAC SYSTEM - DIAGNOSTIC TROUBLE CODE (DTC) CHART
| DTC Code | Detection Item | Trouble Area | Memory* | Diagnostic Note |
|---|---|---|---|---|
| B1411/11 | Room Temperature Sensor Circuit |
|
Memorized (8 5 min or more) | If the front side room temperature is approx -18 6°C (1 48°F) or lower, DTC B1411/11 may be output even though the system is normal |
| B1412/12 | Ambient Temperature Sensor Circuit |
|
Memorized (8 5 min or more) | If ambient temperature is approx -52 9°C (-63 22°F) or lower, a malfunction code may be output even though the system is normal |
| B1413/13 | Evaporator Temperature Sensor Circuit |
|
Memorized (8 5 min or more) | - |
| B1418/18 | Exhaust Gas Sensor Circuit |
|
- | - |
| B1419/19 | Rear Room Temperature Sensor Circuit |
|
Memorized (8 5 min or more) | If the rear driver side room temperature is approx -18 6°C (1 48°F) or lower, DTC B1419/19 may be output even though the system is normal |
| B1421/21 | Solar Sensor Circuit (Passenger Side) |
|
Memorized (8 5 min or more) | If the check is performed in a dark place, DTC B1424/24 (solar sensor circuit (driver side)) or B1428/28 (rear solar sensor circuit) may be output |
| B1424/24 | Solar Sensor Circuit (Driver Side) |
|
Memorized (8 5 min or more) | If the check is performed in a dark place, DTC B1421/21 (solar sensor circuit (passenger side)) or B1428/ 28 (rear solar sensor circuit) may be output |
| B1441/41 | Air Mix Damper Control Servo Motor Circuit (Passenger Side) |
|
Memorized (30 sec) | - |
| B1442/42 | Air Inlet Damper Control Servo Motor Circuit |
|
Memorized (30 sec) | - |
| B1443/43 | Air Outlet Damper Control Servo Motor Circuit |
|
Memorized (30 sec) | - |
| B1446/46 | Air Mix Damper Control Servo Motor Circuit (Driver Side) |
|
Memorized (30 sec.) | - |
| B1449/49 | Rear Air Outlet Damper Control Servo Motor Circuit |
|
Memorized (30 sec) | - |
| B1461/61 | Emission Gas NOx Sensor Circuit |
|
- | - |
| B1497/97 | BUSIC Communication Malfunction |
|
- | - |
| B1499/99 | Multiplex Communication Circuit |
|
- | - |
| B1415/15 | Driver Side Duct Sensor |
|
- | - |
| B1416/16 | Passenger Side Duct Sensor |
|
- | - |
| B1428/28 | Rear Solar Sensor Circuit |
|
Memorized (8 5 min or more) | If the check is performed in a dark place, DTC B1421/21 (solar sensor circuit (passenger side)) or DTC B1424/24 (solar sensor circuit (driver side)) may be output |
| B1444/44 | Driver Side Cool Air Bypass Damper Control |
|
Memorized (30 sec) | - |
| B1445/45 | Passenger Side Cool Air Bypass Damper Control |
|
Memorized (30 sec) | - |
| B1448/48 | Passenger Side FACE Servo Motor Circuit |
|
Memorized (30 sec) | - |
| B1453/53 | Driver Side Air Outlet Damper COOL Control Servo Motor Circuit |
|
Memorized (30 sec) | - |
| B1454/54 | Passenger Side Air Outlet Damper COOL Control Servo Motor Circuit |
|
Memorized (30 sec) | - |
| B1455/55 | Driver Side Air Outlet Damper FOOT/DEF Control Servo Motor Circuit |
|
Memorized (30 sec) | - |
| B1456/56 | Passenger Side Air Outlet Damper FOOT/ DEF Control Servo Motor Circuit |
|
Memorized (30 sec) | - |
| B1457/57 | Driver Side Air Outlet Damper Control Servo Motor Circuit |
|
Memorized (30 sec) | - |
| B1458/58 | Passenger Side Air Outlet Damper Control Servo Motor Circuit |
|
Memorized (30 sec) | - |
| B1459/59 | Max Hot Bypass Damper HOT Control Circuit |
|
Memorized (30 sec) | - |
| B1468/68 | Rear Passenger Side Room Temperature Sensor Circuit |
|
Memorized (8 5 min or more) | If the rear passenger side room temperature is approx -18 6°C (1 48°F) or lower, DTC B1468/68 may be output even though the system is normal |
| B1486/86 | Driver Side Air Outlet Damper Control Servo Motor Circuit |
|
Memorized (30 sec) | - |
| B1487/87 | Passenger Side Air Outlet Damper Control Servo Motor Circuit |
|
Memorized (30 sec) | - |
| B1489/89 | Rear Air Outlet Damper Control Servo Motor RH Circuit |
|
Memorized (30 sec) | - |
| B1493/93 | Max Hot Bypass Damper COOL Control Circuit |
|
Memorized (30 sec) | - |
| B1494/94 | Rear Emission Servo Motor Circuit |
|
Memorized (30 sec) | - |
| B1495/95 | Rear Diffuse Servo Motor Circuit |
|
Memorized (30 sec) | - |
| B1417/17 | Rear Evaporator Temperature Sensor Circuit |
|
Memorized (30 sec) | - |
| B1462/62 | Room Humidity Sensor Circuit |
|
- | - |
| B1469/69 | Infrared Ray Sensor Circuit |
|
- | - |
| B1471/71 | A/C Inverter High Voltage Power Resource System Malfunction |
|
Memorized | - |
| B1472/72 | A/C Inverter High Voltage Output System Malfunction |
|
Memorized | - |
| B1473/73 | A/C Inverter Start-up Signal System Malfunction |
|
- | - |
| B1474/74 | A/C Inverter Malfunction |
|
Memorized | - |
| B1475/75 | A/C Inverter Cooling / Heating System Malfunction |
|
Memorized | - |
| B1476/76 | A/C Inverter Load System Malfunction |
|
Memorized | - |
| B1477/77 | A/C Inverter Low Voltage Power Resource System Malfunction |
|
Memorized | - |
| B1492/92 | Infrared Ray Sensor Communication Malfunction |
|
- | - |
| B1498/98 | Communication Malfunction (A/C Inverter Local) |
|
Memorized | - |
| P0AA6-611 | Hybrid Battery Voltage System Isolation Fault |
|
- | - |
| B1491/91 | HV Battery Cool Down Servo Motor Circuit |
|
Memorized (30 sec) | - |
| B1423/23 | Pressure Sensor Circuit |
|
- | - |
| HINT. *: The air conditioning amplifier memorizes the DTC of the respective malfunction that has occurred for the period of the time indicated in the brackets. |
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