FixVault

Climate Control Unit

WARNING: This page is about a different variant/trim than selected.
DTC DESCRIPTION CHART

DTC Description DTC Type See
B121A An open in the mode control motor circuit Signal error DTC Troubleshooting (see DTC B121A OR DTC INDICATOR G AND A/C ON: AN OPEN IN THE MODE CONTROL MOTOR CIRCUIT )
B121B A short in the mode control motor circuit Signal error DTC Troubleshooting (see DTC B121B OR DTC INDICATOR H AND A/C ON: A SHORT IN THE MODE CONTROL MOTOR CIRCUIT )
B1220 A short in the recirculation control motor circuit Signal error DTC Troubleshooting (see DTC B1220 OR DTC INDICATOR L AND A/C ON: A SHORT IN THE RECIRCULATION CONTROL 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 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 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 A AND A/C ON: 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 B AND A/C ON: 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 C AND A/C ON: 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 D AND A/C ON: 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 E AND A/C ON: 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 F AND A/C ON: A PROBLEM IN THE PASSENGER'S AIR MIX CONTROL LINKAGE, DOOR, OR MOTOR CIRCUIT )
B1240(1) A problem in the mode control linkage, door, or motor Signal error DTC Troubleshooting (see DTC B1240 OR INDICATOR J AND A/C ON: A PROBLEM IN THE 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 IM AND A/C ON: A PROBLEM IN THE BLOWER MOTOR CIRCUIT )
B2983 A problem in the recirculation control linkage, door, or motor Signal error DTC Troubleshooting (see DTC B2983 OR DTC INDICATOR M AND A/C ON: A PROBLEM IN THE RECIRCULATION CONTROL LINKAGE, DOOR, OR MOTOR CIRCUIT )
B2986 An open in the recirculation control motor circuit Signal error DTC Troubleshooting (see DTC B2986 OR DTC INDICATOR K AND A/C ON: AN OPEN IN THE RECIRCULATION CONTROL MOTOR CIRCUIT )
U0155 Climate control unit lost communication with gauge control module Loss of communication DTC Troubleshooting (see DTC TROUBLESHOOTING )
U1280 Communication bus line error (BUS-OFF) Loss of communication DTC Troubleshooting (see DTC U1280: COMMUNICATION BUS LINE ERROR (BUS-OFF)  )
(1) '10-11 models