AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System) DIAGNOSTIC TROUBLE CODE CHART

Tip:

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.
*1: The air conditioning amplifier stores the DTC of the respective malfunction that has been detected for the period of time indicated in parentheses.
*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.

Table 1. Air Conditioning System
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.	Click here
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.	Click here
B1413/13*2	Evaporator Temperature Sensor Circuit	Stored (4 seconds or more)	-	Click here
B1423/23*2	Pressure Sensor Circuit	Stored (4 seconds or more)	-	Click here
B1441/41	Air Mix Damper Control Servo Motor Circuit (Passenger Side)	Stored (30 seconds or more)	-	Click here
B1442/42	Air Inlet Damper Control Servo Motor Circuit	Stored (30 seconds or more)	-	Click here
B1443/43	Air Outlet Damper Control Servo Motor Circuit	Stored (30 seconds or more)	-	Click here
B1446/46	Air Mix Damper Control Servo Motor Circuit (Driver Side)	Stored (30 seconds or more)	-	Click here
B1451/51*2	Compressor Solenoid Circuit	Stored (30 seconds or more)	-	Click here
B1497/97	BUS IC Communication Malfunction	Stored (10 seconds or more)	-	Click here
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.	Click here
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.	Click here
B14B2	Lost Communication with Front Panel LIN	Stored (10 seconds or more)	-	Click here
B14B8	Refrigerant Shortage	Stored (15 seconds or more)	-	Click here
U0100	Lost Communication with ECM	-	-	Click here
U0131	Lost Communication with Power Steering Control Module	-	-	Click here
U0142	Lost Communication with Main Body ECU	-	-	Click here
U0155	Lost Communication with Combination Meter	-	-	Click here