LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 1999 >> GS 400 >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> HVAC DTCS
April 5, 2026: LEMON Manuals is launched! Read the announcement.

HVAC DTCS

HVAC DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

DTC Description
B1411/11 IN-VEHICLE TEMPERATURE SENSOR CIRCUIT
B1412/12 OUTSIDE 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 SWITCH CIRCUIT
B1424/24 SOLAR SENSOR CIRCUIT (DRIVER SIDE)
B1431/31 OR B1441/41 AIR MIX DOOR POSITION SENSOR CIRCUIT (PASSENGER SIDE)
B1431/32 OR B1441/42 AIR INLET DOOR POSITION SENSOR CIRCUIT
B1431/33 OR B1441/43 AIR OUTLET DOOR POSITION SENSOR CIRCUIT
B1431/36 OR B1441/46 AIR MIX DOOR POSITION SENSOR CIRCUIT (DRIVER SIDE)
B1441/41 AIR MIX SERVOMOTOR CIRCUIT (PASSENGER SIDE)
B1442/42 AIR INLET SERVOMOTOR CIRCUIT
B1443/43 AIR OUTLET SERVOMOTOR CIRCUIT
B1446/46 AIR MIX SERVOMOTOR CIRCUIT (DRIVER SIDE)