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Checking for DTCs

The temperature display indicates single or multiple DTCs. If no DTCs are present, the indicator remains blank.

NOTE: If the driver's indicator segments A, B, C, E, G, J, and M with the AUTO indicator, MODE indicator, and the WINDSHIELD DEFROST indicator are on at the same time, there may be an open in the sensor common ground wire.
Fig 1: Display - Multiple DTCs
G08090356Courtesy of AMERICAN HONDA MOTOR CO., INC.
DTC (Driver's Temperature Indicator Segment, AUTO, and WINDSHIELD DEFROST Indicator) Detection Item
A and AUTO An open in the in-car temperature sensor circuit (see DTC B1225 OR DTC INDICATOR A AND AUTO: AN OPEN IN THE IN-CAR TEMPERATURE SENSOR CIRCUIT  )
B and AUTO A short in the in-car temperature sensor circuit (see DTC B1226 OR DTC INDICATOR B AND AUTO: A SHORT IN THE IN-CAR TEMPERATURE SENSOR CIRCUIT  )
C and AUTO An open in the outside air temperature sensor circuit (see DTC B1227 OR DTC INDICATOR C AND AUTO: AN OPEN IN THE OUTSIDE AIR TEMPERATURE SENSOR CIRCUIT  )
D and AUTO A short in the outside air temperature sensor circuit (see DTC B1228 OR DTC INDICATOR D AND AUTO: A SHORT IN THE OUTSIDE AIR TEMPERATURE SENSOR CIRCUIT  )
E and AUTO An open in the sunlight sensor circuit (see DTC B1229 OR DTC INDICATOR E AND AUTO: AN OPEN IN THE SUNLIGHT SENSOR CIRCUIT  )
F and AUTO A short in the sunlight sensor circuit (see DTC B1230 OR DTC INDICATOR F AND AUTO: A SHORT IN THE SUNLIGHT SENSOR CIRCUIT  )
G and AUTO An open in the evaporator temperature sensor circuit (front) (see DTC B1231 OR DTC INDICATOR G AND AUTO: AN OPEN IN THE EVAPORATOR TEMPERATURE SENSOR CIRCUIT (FRONT)  )
H and AUTO A short in the evaporator temperature sensor circuit (front) (see DTC B1232 OR DTC INDICATOR H AND AUTO: A SHORT IN THE EVAPORATOR TEMPERATURE SENSOR CIRCUIT (FRONT)  )
J and AUTO An open in the rear evaporator temperature sensor circuit (see DTC B1213 OR DTC INDICATOR J AND AUTO: AN OPEN IN THE REAR EVAPORATOR TEMPERATURE SENSOR CIRCUIT  )
K and AUTO A short in the rear evaporator temperature sensor circuit (see DTC B1214 OR DTC INDICATOR K AND AUTO: A SHORT IN THE REAR EVAPORATOR TEMPERATURE SENSOR CIRCUIT  )
L and AUTO An open in the A/C pressure sensor circuit (see DTC B2979 OR DTC INDICATOR L AND AUTO: AN OPEN IN THE A/C PRESSURE SENSOR CIRCUIT  )
M and AUTO A short in the A/C pressure sensor circuit (see DTC B2980 OR DTC INDICATOR M AND AUTO: A SHORT IN THE A/C PRESSURE SENSOR CIRCUIT  )
N and AUTO An open in the humidity sensor circuit (see DTC B2967 OR DTC INDICATOR N AND AUTO: AN OPEN IN THE HUMIDITY SENSOR CIRCUIT  )
P and AUTO A short in the humidity sensor circuit (see DTC B2968 OR DTC INDICATOR P AND AUTO: A SHORT IN THE HUMIDITY SENSOR CIRCUIT  )
A and WINDSHIELD DEFROST Humidity/in-car temperature sensor communication error (an open or short in the humidity sensor circuit) (see DTC B121D OR DTC INDICATOR A AND WINDSHIELD DEFROST: HUMIDITY/IN-CAR TEMPERATURE SENSOR COMMUNICATION ERROR (AN OPEN OR SHORT IN THE HUMIDITY SENSOR CIRCUIT)  )
Band WINDSHIELD DEFROST An open in the air mix control motor circuit (driver's) (see DTC B1233 OR DTC INDICATOR B AND WINDSHIELD DEFROST: AN OPEN IN THE AIR MIX CONTROL MOTOR CIRCUIT (DRIVER'S)  )
C and WINDSHIELD DEFROST A short in the air mix control motor circuit (driver's) (see DTC B1234 OR DTC INDICATOR C AND WINDSHIELD DEFROST: A SHORT IN THE AIR MIX CONTROL MOTOR CIRCUIT (DRIVER'S)  )
D and WINDSHIELD DEFROST A problem in the air mix control motor circuit, linkage, door, or motor (driver's) (see DTC B1235 OR DTC INDICATOR D AND WINDSHIELD DEFROST: A PROBLEM IN THE AIR MIX CONTROL MOTOR CIRCUIT, LINKAGE, DOOR, OR MOTOR (DRIVER'S)  )
E and WINDSHIELD DEFROST An open in the passenger's air mix control motor circuit (see DTC B1236 OR DTC INDICATOR E AND WINDSHIELD DEFROST: AN OPEN IN THE PASSENGER'S AIR MIX CONTROL MOTOR CIRCUIT  )
F and WINDSHIELD DEFROST A short in the passenger's air mix control motor circuit (see DTC B1237 OR DTC INDICATOR F AND WINDSHIELD DEFROST: A SHORT IN THE PASSENGER'S AIR MIX CONTROL MOTOR CIRCUIT  )
G and WINDSHIELD DEFROST A problem in the passenger's air mix control motor circuit, linkage, door, or motor (see DTC B1238 OR DTC INDICATOR G AND WINDSHIELD DEFROST: A PROBLEM IN THE PASSENGER'S AIR MIX CONTROL MOTOR CIRCUIT, LINKAGE, DOOR, OR MOTOR  )
H and WINDSHIELD DEFROST An open in the rear air mix control motor circuit (see DTC B1244 OR DTC INDICATOR H AND WINDSHIELD DEFROST: AN OPEN IN THE REAR AIR MIX CONTROL MOTOR CIRCUIT  )
J and WINDSHIELD DEFROST A short in the rear air mix control motor circuit (see DTC B1245 OR DTC INDICATOR J AND WINDSHIELD DEFROST: A SHORT IN THE REAR AIR MIX CONTROL MOTOR CIRCUIT  )
K and WINDSHIELD DEFROST A problem in the rear air mix control motor circuit, linkage, door, or motor (see DTC B1246 OR DTC INDICATOR K AND WINDSHIELD DEFROST: A PROBLEM IN THE REAR AIR MIX CONTROL MOTOR CIRCUIT, LINKAGE, DOOR, OR MOTOR  )
L and WINDSHIELD DEFROST An open in the recirculation control motor circuit (see DTC B1215 OR DTC INDICATOR L AND WINDSHIELD DEFROST OR M AND WINDSHIELD DEFROST: AN OPEN OR SHORT IN THE RECIRCULATION CONTROL MOTOR CIRCUIT  )
M and WINDSHIELD DEFROST A short in the recirculation control motor circuit (see DTC B1215 OR DTC INDICATOR L AND WINDSHIELD DEFROST OR M AND WINDSHIELD DEFROST: AN OPEN OR SHORT IN THE RECIRCULATION CONTROL MOTOR CIRCUIT  )
N and WINDSHIELD DEFROST A problem in the recirculation control motor circuit, linkage, door, or motor (see DTC B2983 OR DTC INDICATOR N AND WINDSHIELD DEFROST: A PROBLEM IN THE RECIRCULATION CONTROL MOTOR CIRCUIT, LINKAGE, DOOR, OR MOTOR  )
A and MODE An open in the mode control motor circuit (front) (see DTC B1239 OR DTC INDICATOR A AND MODE OR B AND MODE: AN OPEN OR SHORT IN THE MODE CONTROL MOTOR CIRCUIT (FRONT)  )
B and MODE A short in the mode control motor circuit (front) (see DTC B1239 OR DTC INDICATOR A AND MODE OR B AND MODE: AN OPEN OR SHORT IN THE MODE CONTROL MOTOR CIRCUIT (FRONT)  )
C and MODE A problem in the mode control motor circuit, linkage, door, or motor (front) (see DTC B1240 OR DTC INDICATOR C AND MODE: A PROBLEM IN THE MODE CONTROL MOTOR CIRCUIT, LINKAGE, DOOR, OR MOTOR (FRONT)  )
K and MODE A problem in the blower motor circuit (front) (see DTC B1241 OR DTC INDICATOR K AND MODE: A PROBLEM IN THE BLOWER MOTOR CIRCUIT (FRONT)  )
L and MODE A problem in the rear blower motor circuit (see DTC B1223 OR DTC INDICATOR L AND MODE: A PROBLEM IN THE REAR BLOWER MOTOR CIRCUIT  )