Automatic HVAC DTCS
AUTOMATIC HVAC DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| B100A | RECIRCULATION SWITCH REQUEST INPUT CIRCUIT LOW (ATC) |
| B100D | FLOOR MODE SWITCH REQUEST INPUT CIRCUIT LOW (ATC) |
| B101C | TEMP DOWN SWITCH REQUEST INPUT CIRCUIT LOW (ATC) |
| B101F | POWER ON/OFF SWITCH REQUEST INPUT CIRCUIT LOW (ATC) |
| B102B | REAR FUNCTION CONTROL SWITCH REQUEST INPUT CIRCUIT LOW (ATC) |
| B102E | REAR BLEND REQUEST INPUT CIRCUIT LOW (ATC) |
| B102E | REAR BLEND REQUEST INPUT CIRCUIT LOW (MTC) |
| B102F | REAR BLEND REQUEST INPUT CIRCUIT HIGH (ATC) |
| B102F | REAR BLEND REQUEST INPUT CIRCUIT HIGH (MTC) |
| B103A | REAR MODE DOOR CONTROL CIRCUIT/PERFORMANCE (ATC) |
| B103A | REAR MODE DOOR CONTROL CIRCUIT/PERFORMANCE (MTC) |
| B103B | REAR MODE DOOR CONTROL CIRCUIT LOW (ATC) |
| B103B | REAR MODE DOOR CONTROL CIRCUIT LOW (MTC) |
| B103C | REAR MODE DOOR CONTROL CIRCUIT HIGH (ATC) |
| B103C | REAR MODE DOOR CONTROL CIRCUIT HIGH (MTC) |
| B103D | REAR MODE DOOR CONTROL CIRCUIT OPEN (ATC) |
| B103D | REAR MODE DOOR CONTROL CIRCUIT OPEN (MTC) |
| B103E | REAR MODE DOOR TRAVEL RANGE TOO SMALL (ATC & MTC) |
| B103F | REAR MODE DOOR TRAVEL RANGE TOO LARGE (ATC & MTC) |
| B104A | FLOOR/DEFROST MODE DOOR TRAVEL RANGE TOO SMALL (ATC & MTC) |
| B104B | FLOOR/DEFROST MODE DOOR TRAVEL RANGE TOO LARGE (ATC & MTC) |
| B104C | BLEND DOOR CONTROL CIRCUIT/PERFORMANCE (ATC) |
| B104C | BLEND DOOR CONTROL CIRCUIT/PERFORMANCE (ACTIVE) (MTC) |
| B104D | BLEND DOOR CONTROL CIRCUIT LOW (ATC) |
| B104D | BLEND DOOR CONTROL CIRCUIT LOW (MTC) |
| B104E | BLEND DOOR CONTROL CIRCUIT HIGH (ATC) |
| B104E | BLEND DOOR CONTROL CIRCUIT HIGH (MTC) |
| B104F | BLEND DOOR CONTROL CIRCUIT OPEN (ATC) |
| B104F | BLEND DOOR CONTROL CIRCUIT OPEN (MTC) |
| B105A | RECIRCULATION DOOR CONTROL CIRCUIT HIGH (ATC) |
| B105A | RECIRCULATION DOOR CONTROL CIRCUIT HIGH (MTC) |
| B105B | RECIRCULATION DOOR CONTROL CIRCUIT OPEN (ATC) |
| B105B | RECIRCULATION DOOR CONTROL CIRCUIT OPEN (MTC) |
| B105C | RECIRCULATION DOOR TRAVEL RANGE TOO SMALL (ATC & MTC) |
| B105D | RECIRCULATION DOOR TRAVEL RANGE TOO LARGE (ATC & MTC) |
| B105F | CLIMATE CONTROL MOTOR(S) COMMON 1 CONTROL CIRCUIT LOW (ATC) |
| B105F | CLIMATE CONTROL MOTOR(S) COMMON 1 CONTROL CIRCUIT LOW (MTC) |
| B107E | AUXILIARY COOLANT PUMP CONTROL CIRCUIT LOW (ATC) |
| B107E | AUXILIARY COOLANT PUMP CONTROL CIRCUIT LOW (MTC) |
| B108E | INFRARED TEMPERATURE SENSOR INTERNAL (ATC) |
| B108F | AUTOMATIC TEMPERATURE CONTROL SYSTEM PERFORMANCE (ATC) |
| B1001 | A/C SWITCH REQUEST INPUT CIRCUIT LOW (ATC & MTC) |
| B1004 | PANEL MODE SWITCH REQUEST INPUT CIRCUIT LOW (ATC) |
| B1007 | BI-LEVEL SWITCH REQUEST INPUT CIRCUIT LOW (ATC) |
| B1010 | MIX SWITCH REQUEST INPUT CIRCUIT LOW (ATC) |
| B1013 | DEFROST SWITCH REQUEST INPUT CIRCUIT LOW (ATC) |
| B1016 | REAR DEFROST SWITCH REQUEST INPUT CIRCUIT LOW (ATC & MTC) |
| B1019 | TEMP UP SWITCH REQUEST INPUT CIRCUIT LOW (ATC) |
| B1022 | BLOWER SPEED UP SWITCH REQUEST INPUT CIRCUIT LOW (ATC) |
| B1025 | BLOWER SPEED DOWN SWITCH REQUEST INPUT CIRCUIT LOW (ATC) |
| B1027 | REAR BLOWER CONTROL REQUEST INPUT CIRCUIT/PERFORMANCE (ATC) |
| B1031 | EVAPORATOR FIN TEMPERATURE SENSOR CIRCUIT LOW (ATC) |
| B1031 | EVAPORATOR FIN TEMPERATURE SENSOR CIRCUIT LOW (MTC) |
| B1032 | EVAPORATOR FIN TEMPERATURE SENSOR CIRCUIT HIGH (ATC) |
| B1032 | EVAPORATOR FIN TEMPERATURE SENSOR CIRCUIT HIGH (MTC) |
| B1034 | INFRARED TEMPERATURE SENSOR INPUT CIRCUIT LOW |
| B1035 | INFRARED TEMPERATURE SENSOR INPUT CIRCUIT HIGH |
| B1038 | AUTO SWITCH REQUEST INPUT CIRCUIT LOW (ATC) |
| B1040 | PANEL MODE DOOR 1 CONTROL CIRCUIT/PERFORMANCE (ATC) |
| B1040 | PANEL MODE DOOR 1 CONTROL CIRCUIT/PERFORMANCE (MTC) |
| B1041 | PANEL MODE DOOR 1 CONTROL CIRCUIT LOW (ATC) |
| B1041 | PANEL MODE DOOR 1 CONTROL CIRCUIT LOW (MTC) |
| B1042 | PANEL MODE DOOR 1 CONTROL CIRCUIT HIGH (ATC) |
| B1042 | PANEL MODE DOOR 1 CONTROL CIRCUIT HIGH (MTC) |
| B1043 | PANEL MODE DOOR 1 CONTROL CIRCUIT OPEN (ATC) |
| B1043 | PANEL MODE DOOR 1 CONTROL CIRCUIT OPEN (MTC) |
| B1044 | PANEL MODE DOOR 1 TRAVEL RANGE TOO SMALL (ATC & MTC) |
| B1045 | PANEL MODE DOOR 1 TRAVEL RANGE TOO LARGE (ATC & MTC) |
| B1046 | FLOOR/DEFROST MODE DOOR CONTROL CIRCUIT/PERFORMANCE (ATC) |
| B1046 | FLOOR/DEFROST MODE DOOR CONTROL CIRCUIT/PERFORMANCE (MTC) |
| B1047 | FLOOR/DEFROST MODE DOOR CONTROL CIRCUIT LOW (ATC) |
| B1047 | FLOOR/DEFROST MODE DOOR CONTROL CIRCUIT LOW (MTC) |
| B1048 | FLOOR/DEFROST MODE DOOR CONTROL CIRCUIT HIGH (ATC) |
| B1048 | FLOOR/DEFROST MODE DOOR CONTROL CIRCUIT HIGH (MTC) |
| B1049 | FLOOR/DEFROST MODE DOOR CONTROL CIRCUIT OPEN (ATC) |
| B1049 | FLOOR/DEFROST MODE DOOR CONTROL CIRCUIT OPEN (MTC) |
| B1050 | BLEND DOOR TRAVEL RANGE TOO SMALL (ATC & MTC) |
| B1051 | BLEND DOOR TRAVEL RANGE TOO LARGE (ATC & MTC) |
| B1052 | REAR BLEND DOOR CONTROL CIRCUIT/PERFORMANCE (ATC) |
| B1052 | REAR BLEND DOOR CONTROL CIRCUIT/PERFORMANCE (MTC) |
| B1053 | REAR BLEND DOOR CONTROL CIRCUIT LOW (ATC) |
| B1053 | REAR BLEND DOOR CONTROL CIRCUIT LOW (MTC) |
| B1054 | REAR BLEND DOOR CONTROL CIRCUIT HIGH (ATC) |
| B1054 | REAR BLEND DOOR CONTROL CIRCUIT HIGH (MTC) |
| B1055 | REAR BLEND DOOR CONTROL CIRCUIT OPEN (ATC) |
| B1055 | REAR BLEND DOOR CONTROL CIRCUIT OPEN (MTC) |
| B1056 | REAR BLEND DOOR TRAVEL RANGE TOO SMALL (ATC & MTC) |
| B1057 | REAR BLEND DOOR TRAVEL RANGE TOO LARGE (ATC & MTC) |
| B1058 | RECIRCULATION DOOR CONTROL CIRCUIT/PERFORMANCE (ATC) |
| B1058 | RECIRCULATION DOOR CONTROL CIRCUIT/PERFORMANCE (MTC) |
| B1059 | RECIRCULATION DOOR CONTROL CIRCUIT LOW (ATC) |
| B1059 | RECIRCULATION DOOR CONTROL CIRCUIT LOW (MTC) |
| B1060 | CLIMATE CONTROL MOTOR(S) COMMON 1 CONTROL CIRCUIT HIGH (ATC) |
| B1060 | CLIMATE CONTROL MOTOR(S) COMMON 1 CONTROL CIRCUIT HIGH (MTC) |
| B1063 | CLIMATE CONTROL MOTOR(S) COMMON 2 CONTROL CIRCUIT LOW (ATC) |
| B1064 | CLIMATE CONTROL MOTOR(S) COMMON 2 CONTROL CIRCUIT HIGH (ATC) |
| B1067 | CLIMATE CONTROL MOTOR(S) COMMON 3 CONTROL CIRCUIT LOW (ATC) |
| B1068 | CLIMATE CONTROL MOTOR(S) COMMON 3 CONTROL CIRCUIT HIGH (ATC) |
| B1070 | REAR BLOWER CONTROL CIRCUIT HIGH (ATC) |
| B1079 | CLIMATE CONTROL COOL DOWN TEST EXCESSIVE TIME (ATC & MTC) |
| B1080 | AUXILIARY COOLANT PUMP CONTROL CIRCUIT OPEN (ATC) |
| B1080 | AUXILIARY COOLANT PUMP CONTROL CIRCUIT OPEN (MTC) |
| B1090 | ACTUATOR PULSE COUNT PERFORMANCE (ATC & MTC) |
| B2214 | (HVAC) CLIMATE CONTROL INTERNAL (ATC & MTC) |
| B2310 | REAR WASHER SWITCH INPUT CIRCUIT LOW (ATC & MTC) |
| U0019 | CAN B BUS (ATC) |
| U0019 | CAN B BUS (MTC) |
| U0141 | LOST COMMUNICATION WITH FRONT CONTROL MODULE (ATC & MTC) |
| U0155 | LOST COMMUNICATION WITH CLUSTER/CCN (ATC & MTC) |
| U0156 | LOST COMMUNICATION WITH EOM (ATC) |