Checking for DTCs

The driver's temperature indicator display indicates single or multiple DTCs. If no DTCs are present, the indicator will flash no.

NOTE: If the driver's temperature indicator segments 05, 07, 09, 40, 43, 49, 55, and 89 indicators are on at the same time, there may be an open in the sensor common ground wire.

Courtesy of HONDA, U.S.A., INC.

DTC (Driver's Temperature Indicator Segments)	DTC	Detection Item
05	B1227	An open in the outside air temperature sensor circuit
06	B1228	A short in the outside air temperature sensor circuit
07	B1229	An open in the sunlight sensor circuit
08	B1230	A short in the sunlight sensor circuit
09	B1231	An open in the evaporator temperature sensor circuit
0A	B1232	A short in the evaporator temperature sensor circuit
40	B1233	An open in the air mix control motor circuit (driver's)
41	B1234	A short in the air mix control motor circuit (driver's)
42	B1235	A problem in the air mix control motor circuit, linkage, door, or motor (driver's)
43	B1236	An open in the passenger's air mix control motor circuit
44	B1237	A short in the passenger's air mix control motor circuit
45	B1238	A problem in the passenger's air mix control motor circuit, linkage, door, or motor
49	B121A	An open in the mode control motor circuit
4A	B121B	A short in the mode control motor circuit
4B	B1240	A problem in the mode control motor circuit, linkage, door, or motor
55	B2986	An open in the recirculation control motor circuit
56	B1220	A short in the recirculation control motor circuit
57	B2983	A problem in the recirculation control motor circuit, linkage, door, or motor
59	B1241	A problem in the blower motor circuit
80	U1280	Communication bus line error (BUS-OFF)
81	U128D	Climate control unit lost communication with gauge control module (ECT message)
83	U128D	Climate control unit lost communication with gauge control module (VSP message)

DTC (Driver's Temperature Indicator Segments)	DTC	Detection Item
89	B121D	Humidity/in-car temperature sensor communication error
C0	Climate control unit internal error