Checking for DTCs

WARNING: This page is about a different car, the 2011 Acura TL, 2010 Acura TL, and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.

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, C, E, G, 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: Identifying Driver's Indicator Segments, AUTO Indicator And MODE Indicator

Courtesy of AMERICAN HONDA MOTOR CO., INC.

DTC CHART

DTC (Driver's Temperature Indicator Segment, AUTO, MODE, and WINDSHIELD DEFROST Indicator)	Detection Item
AUTO	Engine coolant temperature (ECT) sensor signal error Check for DTCs (P2183, P2184, or P2185) in the PGM-FI system and go to the indicated DTC's troubleshooting If no DTCs are found, replace the climate control unit (see CLIMATE CONTROL UNIT REMOVAL/INSTALLATION )
A and AUTO	An open in the m-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 (see DTC B1231 OR DTC INDICATOR G AND AUTO: AN OPEN IN THE EVAPORATOR TEMPERATURE SENSOR CIRCUIT )
H and AUTO	A short in the evaporator temperature sensor circuit (see DTC B1232 OR DTC INDICATOR H AND AUTO: A SHORT IN THE EVAPORATOR TEMPERATURE SENSOR CIRCUIT )
J and AUTO	An open in the driver's air mix control motor circuit (see DTC B1233 OR DTC INDICATOR J AND AUTO: AN OPEN IN THE DRIVER'S AIR MIX CONTROL MOTOR CIRCUIT )
K and AUTO	A short in the driver's air mix control motor circuit (see DTC B1234 OR DTC INDICATOR K AND AUTO: A SHORT IN THE DRIVER'S AIR MIX CONTROL MOTOR CIRCUIT )
L and AUTO	A problem in the driver's air mix control linkage, door, or motor circuit (see DTC B1235 OR DTC INDICATOR L AND AUTO: A PROBLEM IN THE DRIVER'S AIR MIX CONTROL LINKAGE, DOOR, OR MOTOR CIRCUIT )
M and AUTO	An open in the passenger's air mix control motor circuit (see DTC B1236 OR DTC INDICATOR M AND AUTO: AN OPEN IN THE PASSENGER'S AIR MIX CONTROL MOTOR CIRCUIT )
N and AUTO	A short in the passenger's air mix control motor circuit (see DTC B1237 OR DTC INDICATOR N AND AUTO: A SHORT IN THE PASSENGER'S AIR MIX CONTROL MOTOR CIRCUIT )
P and AUTO	A problem in the passenger's air mix control linkage, door, or motor circuit (see DTC B1238 OR DTC INDICATOR P AND AUTO: A PROBLEM IN THE PASSENGER'S AIR MIX CONTROL LINKAGE, DOOR, OR MOTOR CIRCUIT )
A and WINDSHIELD DEFROST	An open in the humidity sensor circuit (see DTC B2967 OR DTC INDICATOR A AND WINDSHIELD DEFROST: AN OPEN IN THE HUMIDITY SENSOR CIRCUIT )
B and WINDSHIELD DEFROST	A short in the humidity sensor circuit (see DTC B2968 OR DTC INDICATOR B AND WINDSHIELD DEFROST: A SHORT IN THE HUMIDITY SENSOR CIRCUIT )
E and WINDSHIELD DEFROST	An open in the A/C pressure sensor circuit (see DTC B2979 OR DTC INDICATOR E AND WINDSHIELD DEFROST: AN OPEN IN THE A/C PRESSURE SENSOR CIRCUIT )
F and WINDSHIELD DEFROST	A short in the A/C pressure sensor circuit (see DTC B2980 OR DTC INDICATOR F AND WINDSHIELD DEFROST: A SHORT IN THE A/C PRESSURE SENSOR CIRCUIT )
A and MODE	An open or short in the driver's mode control motor circuit (see DTC B1239 OR DTC INDICATOR A AND MODE: AN OPEN OR SHORT IN THE DRIVER'S MODE CONTROL MOTOR CIRCUIT )
B and MODE	A problem in the driver's mode control linkage, doors, or motor circuit (see DTC B1240 OR DTC INDICATOR B AND MODE: A PROBLEM IN THE DRIVER'S MODE CONTROL LINKAGE, DOORS, OR MOTOR CIRCUIT )
C and MODE	A problem in the blower motor circuit (see DTC B1241 OR DTC INDICATOR C AND MODE: A PROBLEM IN THE BLOWER MOTOR CIRCUIT )
E and MODE	An open or short in the passenger's mode control motor circuit (see DTC B1242 OR DTC INDICATOR E AND MODE: AN OPEN OR SHORT IN THE PASSENGER'S MODE CONTROL MOTOR CIRCUIT )
F and MODE	A problem in the passenger's mode control linkage, doors, or motor circuit (see DTC B1243 OR DTC INDICATOR F AND MODE: A PROBLEM IN THE PASSENGER'S MODE CONTROL LINKAGE, DOORS, OR MOTOR CIRCUIT )
J and MODE	An open or short in the recirculation control motor circuit (see DTC B1215 OR DTC INDICATOR J AND MODE: AN OPEN OR SHORT IN THE RECIRCULATION CONTROL MOTOR CIRCUIT )
K and MODE	A problem in the recirculation control linkage, door, or motor circuit (see DTC B2983 OR DTC INDICATOR K AND MODE: A PROBLEM IN THE RECIRCULATION CONTROL LINKAGE, DOOR, OR MOTOR CIRCUIT )