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Home >> Honda >> 2021 >> Ridgeline RTL-E >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> HVAC System DTCS >> Climate Control System
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Climate Control System

DTC  Description 
U0180 Climate Control Unit Lost communication with automatic lighting control unit-sensor
U1280 Communication bus line error (BUS-OFF)
U1281 Climate Control Unit Lost Communication with MICU (climate control unit)
U128D Climate Control Unit Lost communication with gauge control module (climate control unit)
U1290 Climate Control Unit Lost Communication With Seat Heater Control Unit (front)
U129B Climate Control Unit Lost Communication With Seat Heater Control Unit (rear seat)
B1213 An open in the rear evaporator temperature sensor circuit
B1214 A short in the rear evaporator temperature sensor circuit
B1220 A short in the recirculation control motor circuit
B1221 An open in the rear mode control motor circuit
B1222 A short in the rear mode control motor circuit
B1223 A problem in the rear blower motor circuit
B1225 An open in the in-car temperature sensor circuit
B1226 A short in the in-car temperature sensor circuit
B1227 An open in the outside air temperature sensor circuit
B1228 A short in the outside air temperature sensor circuit
B1229 An open in the sunlight sensor circuit
B1230 A short in the sunlight sensor circuit
B1231 An open in the evaporator temperature sensor circuit (front)
B1232 A short in the evaporator temperature sensor circuit (front)
B1233 An open in the air mix control motor circuit (driver's)
B1234 A short in the air mix control motor circuit (driver's)
B1235 A problem in the air mix control motor circuit, linkage, door, or motor (driver's)
B1236 An open in the passenger's air mix control motor circuit
B1237 A short in the passenger's air mix control motor circuit
B1238 A problem in the passenger's air mix control motor circuit, linkage, door, or motor
DTC  Description 
B123F Automatic lighting control unit/sunlight sensor error
B1241 A problem in the blower motor circuit (front)
B1244 An open in the rear air mix control motor circuit
B1245 A short in the rear air mix control motor circuit
B1246 A problem in the rear air mix control motor circuit, linkage, door, or motor
B1248 A problem in the rear mode control motor circuit, linkage, door, or motor
B2964 Climate control unit lost communication with Front PANEL
B2966 Climate control unit lost communication with Rear PANEL
B2967 An open in the humidity sensor circuit
B2968 A short in the humidity sensor circuit
B2969 An open in the mode control motor A circuit (front)
B2970 A short in the mode control motor A circuit (front)
B2971 A problem in the mode control motor A circuit, linkage, door, or motor (front)
B2972 An open in the mode control motor B circuit (front)
B2973 A short in the mode control motor B circuit (front)
B2974 A problem in the mode control motor B circuit, linkage, door, or motor (front)
B2979 An open in the A/C pressure sensor circuit
B2980 A short in the A/C pressure sensor circuit
B2983 A problem in the recirculation control motor circuit, linkage, door, or motor
B2986 An open in the recirculation control motor circuit