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Home >> Honda >> 2021 >> CR-V EX-L, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (HVAC System - Diagnostics (Hybrid)) >> How to Information >> How to Troubleshoot the Climate Control System (Climate Control Panel with Display) >> Checking for DTCs

Checking for DTCs

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

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

DTC (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
09 B1231  An open in the evaporator temperature sensor circuit
0A B1232  A short in the evaporator temperature sensor circuit
DTC (Temperature Indicator Segments) DTC Detection Item
17 B123F  Automatic lighting control unit/sunlight sensor error
40 B1233  An open in the air mix control motor circuit
41 B1234  A short in the air mix control motor circuit
42 B1235  A problem in the 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
68 B296D Electric water pump communication fail
69 B296E  Electric water pump fail
80 U1280  Communication bus line error (BUS-OFF)
83 U128D  Climate control unit lost communication with gauge control module (VSP message)
89 B121D  Humidity/in-car temperature sensor communication error
8A B120A  Climate control unit LIN communication bus line error
91 U1281  Climate control unit lost communication with MICU (body control module)
93 B2964  Climate control unit lost communication with front panel (climate control panel)
C0  --- Climate control unit internal error
C3 B2990  A problem in the A/C compressor driving circuit (A problem in the electric A/C compressor driving circuit)
C5 B2998  A problem in the A/C compressor driver (A problem in the electric A/C compressor driver)
C7  --- Electric A/C compressor lost communication
Cd  --- Unknown sunlight sensor type