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Climate Control Unit

WARNING: This page is about a different car, the 2011 Honda Pilot, 2010 Honda Pilot, and 2009 Honda Pilot. However, it is still accessible from the selected car via links, so may be relevant.
CLIMATE CONTROL UNIT REFERENCE TABLE

DTC Description DTC Type Reference
B1213 An open in the rear evaporator temperature sensor circuit Signal error DTC Troubleshooting (see DTC B1213 OR DTC INDICATOR N: AN OPEN IN THE REAR EVAPORATOR TEMPERATURE SENSOR CIRCUIT )
B1214 A short in the rear evaporator temperature sensor circuit Signal error DTC Troubleshooting (see DTC B1214 OR DTC INDICATOR P: A SHORT IN THE REAR EVAPORATOR TEMPERATURE SENSOR CIRCUIT )
B1215 An open or short in the recirculation control motor circuit Signal error DTC Troubleshooting (see DTC B1215 OR DTC INDICATOR C AND WINDSHIELD DEFROST: AN OPEN OR SHORT IN THE RECIRCULATION CONTROL MOTOR CIRCUIT )
B1223 A problem in the rear blower motor circuit Signal error DTC Troubleshooting (see DTC B1223 OR DTC INDICATOR M: A PROBLEM IN THE REAR BLOWER MOTOR CIRCUIT )
B1225 An open in the in-car temperature sensor circuit Signal error DTC Troubleshooting (see DTC B1225 OR DTC INDICATOR A AND AUTO: AN OPEN IN THE IN-CAR TEMPERATURE SENSOR CIRCUIT )
B1226 A short in the in-car temperature sensor circuit Signal error DTC Troubleshooting (see DTC B1226 OR DTC INDICATOR B AND AUTO: A SHORT IN THE IN-CAR TEMPERATURE SENSOR CIRCUIT )
B1227 An open in the outside air temperature sensor circuit Signal error DTC Troubleshooting (see DTC B1227 OR DTC INDICATOR C AND AUTO: AN OPEN IN THE OUTSIDE AIR TEMPERATURE SENSOR CIRCUIT )
B1228 A short in the outside air temperature sensor circuit Signal error DTC Troubleshooting (see DTC B1228 OR DTC INDICATOR D AND AUTO: A SHORT IN THE OUTSIDE AIR TEMPERATURE SENSOR CIRCUIT )
B1229 An open in the sunlight sensor circuit Signal error DTC Troubleshooting (see DTC B1229 OR DTC INDICATOR E AND AUTO: AN OPEN IN THE SUNLIGHT SENSOR CIRCUIT )
B1230 A short in the sunlight sensor circuit Signal error DTC Troubleshooting (see DTC B1230 OR DTC INDICATOR F AND AUTO: A SHORT IN THE SUNLIGHT SENSOR CIRCUIT )
B1231 An open in the evaporator temperature sensor circuit Signal error DTC Troubleshooting (see DTC B1231 OR DTC INDICATOR G AND AUTO: AN OPEN IN THE FRONT EVAPORATOR TEMPERATURE SENSOR CIRCUIT )
B1232 A short in the evaporator temperature sensor circuit Signal error DTC Troubleshooting (see DTC B1232 OR DTC INDICATOR H AND AUTO: A SHORT IN THE FRONT EVAPORATOR TEMPERATURE SENSOR CIRCUIT )
B1233 An open in the driver's air mix control motor circuit Signal error DTC Troubleshooting (see DTC B1233 OR DTC INDICATOR J AND AUTO: AN OPEN IN THE DRIVER'S AIR MIX CONTROL MOTOR CIRCUIT )
B1234 A short in the driver's air mix control motor circuit Signal error DTC Troubleshooting (see DTC B1234 OR DTC INDICATOR K AND AUTO: A SHORT IN THE DRIVER'S AIR MIX CONTROL MOTOR CIRCUIT )
B1235 A problem in the driver's air mix control linkage, door, or motor Signal error DTC Troubleshooting (see DTC B1235 OR DTC INDICATOR L AND AUTO: A PROBLEM IN THE DRIVER'S AIR MIX CONTROL LINKAGE, DOOR, OR MOTOR CIRCUIT )
B1236 An open in the passenger's air mix control motor circuit Signal error DTC Troubleshooting (see DTC B1236 OR DTC INDICATOR M AND AUTO: AN OPEN IN THE PASSENGER'S AIR MIX CONTROL MOTOR CIRCUIT )
B1237 A short in the passenger's air mix control motor circuit Signal error DTC Troubleshooting (see DTC B1237 OR DTC INDICATOR N AND AUTO: A SHORT IN THE PASSENGER'S AIR MIX CONTROL MOTOR CIRCUIT )
B1238 A problem in the passenger's air mix control linkage, door, or motor Signal error DTC Troubleshooting (see DTC B1238 OR DTC INDICATOR P AND AUTO: A PROBLEM IN THE PASSENGER'S AIR MIX CONTROL LINKAGE, DOOR, OR MOTOR CIRCUIT )
B1239 An open or short in the mode control motor circuit Signal error DTC Troubleshooting (see DTC B1239 OR DTC INDICATOR A: AN OPEN OR SHORT IN THE FRONT MODE CONTROL MOTOR CIRCUIT )
B1240 A problem in the mode control linkage, doors, or motor Signal error DTC Troubleshooting (see DTC B1240 OR DTC INDICATOR B: A PROBLEM IN THE FRONT MODE CONTROL LINKAGE, DOORS, OR MOTOR CIRCUIT )
B1241 A problem in the blower motor circuit Signal error DTC Troubleshooting (see DTC B1241 OR DTC INDICATOR C: A PROBLEM IN THE FRONT BLOWER MOTOR CIRCUIT )
B1244 An open in the rear air mix control motor circuit Signal error DTC Troubleshooting (see DTC B1244 OR DTC INDICATOR F: AN OPEN IN THE REAR AIR MIX CONTROL MOTOR CIRCUIT )
B1245 A short in the rear air mix control motor circuit Signal error DTC Troubleshooting (see DTC B1245 OR DTC INDICATOR G: A SHORT IN THE REAR AIR MIX CONTROL MOTOR CIRCUIT )
B1246 A problem in the rear air mix control linkage, door, or motor Signal error DTC Troubleshooting (see DTC B1246 OR DTC INDICATOR H: A PROBLEM IN THE REAR AIR MIX CONTROL LINKAGE, DOOR, OR MOTOR CIRCUIT )
B2965 Climate Control unit lost communications with rear climate control panel Loss of communication DTC Troubleshooting (see DTC B2965: CLIMATE CONTROL UNIT LOST COMMUNICATION WITH REAR CLIMATE CONTROL PANEL )
B2967 An open in the humidity sensor circuit Signal error DTC Troubleshooting (see DTC B2967 OR DTC INDICATOR A AND WINDSHIELD DEFROST: AN OPEN IN THE HUMIDITY SENSOR CIRCUIT )
B2968 A short in the humidity sensor circuit Signal error DTC Troubleshooting (see DTC B2968 OR DTC INDICATOR A AND WINDSHIELD DEFROST: A SHORT IN THE HUMIDITY SENSOR CIRCUIT )
B2969 Climate control unit lost communication with MICU (WIPSW message) Loss of communication DTC Troubleshooting (see DTC B2969: CLIMATE CONTROL UNIT LOST COMMUNICATION WITH MICU (WIPSW MESSAGE) )
B2979 An open in the pressure sensor circuit Signal error DTC Troubleshooting (see DTC B2979 OR DTC INDICATOR B AND WINDSHIELD DEFROST: AN OPEN IN THE A/C PRESSURE SENSOR CIRCUIT )
B2980 A short in the pressure sensor circuit Signal error DTC Troubleshooting (see DTC B2980 OR DTC INDICATOR B AND WINDSHIELD DEFROST: A SHORT IN THE A/C PRESSURE SENSOR CIRCUIT )
B2983 A problem in the recirculation control linkage, door, or motor circuit Signal error DTC Troubleshooting (see DTC B2983 OR DTC INDICATOR D AND WINDSHIELD DEFROST: A PROBLEM IN THE RECIRCULATION CONTROL LINKAGE, DOOR, OR MOTOR CIRCUIT )
U0155 Climate control unit lost communication with gauge control module Loss of communication DTC Troubleshooting (see DTC U0155: CLIMATE CONTROL UNIT LOST COMMUNICATION WITH GAUGE CONTROL MODULE )
U1280 Communication bus line error (BUS-OFF) Loss of communication DTC Troubleshooting (see DTC U1280: COMMUNICATION BUS LINE ERROR (BUS-OFF)  )