DTC Troubleshooting Index

To retrieve the DTC, you must run the self-diagnostic function (see GENERAL TROUBLESHOOTING INFORMATION ). In the case of multiple problems, the respective indicator segments will come on. If indicator segments A, C, E, G, I, and L come on at the same time, there may be an open in the common ground wire of the sensors.

Fig 1: Identifying Temperature Indicator

Courtesy of AMERICAN HONDA MOTOR CO., INC.

DTC TROUBLESHOOTING INDEX

DTC (Temperature Indicator Segment)	Detection Item	Action
A	An open in the in-car temperature sensor circuit	(see DTC INDICATOR A: AN OPEN IN THE IN-CAR TEMPERATURE SENSOR CIRCUIT )
B	A short in the in-car temperature sensor circuit	(see DTC INDICATOR B: A SHORT IN THE IN-CAR TEMPERATURE SENSOR CIRCUIT )
C	An open in the outside air temperature sensor circuit	(see DTC INDICATOR C: AN OPEN IN THE OUTSIDE AIR TEMPERATURE SENSOR CIRCUIT )
D	A short in the outside air temperature sensor circuit	(see DTC INDICATOR D: A SHORT IN THE OUTSIDE AIR TEMPERATURE SENSOR CIRCUIT )
E	An open in the sunlight sensor circuit	(see DTC INDICATOR E: AN OPEN IN THE SUNLIGHT SENSOR CIRCUIT )
F	A short in the sunlight sensor circuit	(see DTC INDICATOR F: A SHORT IN THE SUNLIGHT SENSOR CIRCUIT )
G	An open in the evaporator temperature sensor circuit	(see DTC INDICATOR G: AN OPEN IN THE EVAPORATOR TEMPERATURE SENSOR CIRCUIT )
H	A short in the evaporator temperature sensor circuit	(see DTC INDICATOR H: A SHORT IN THE EVAPORATOR TEMPERATURE SENSOR CIRCUIT )
I	An open in the air mix control motor circuit	(see DTC INDICATOR I: AN OPEN IN THE AIR MIX CONTROL MOTOR CIRCUIT )
J	A short in the air mix control motor circuit	(see DTC INDICATOR J: A SHORT IN THE AIR MIX CONTROL MOTOR CIRCUIT )
K	A problem in the air mix control linkage, doors, or motor	(see DTC INDICATOR K: A PROBLEM IN THE AIR MIX CONTROL LINKAGE, DOORS, OR MOTOR )
L	An open in the heater core temperature sensor circuit	(see DTC INDICATOR L: AN OPEN IN THE HEATER CORE TEMPERATURE SENSOR CIRCUIT )
M	A short in the heater core temperature sensor circuit	(see DTC INDICATOR M: A SHORT IN THE HEATER CORE TEMPERATURE SENSOR CIRCUIT )
N	A problem in the blower motor circuit	(see DTC INDICATOR N: A PROBLEM IN THE BLOWER MOTOR CIRCUIT )