B1246 The climate control unit found a problem in the rear air mix motor, linkage, or door
What does B1246 mean on a Honda?
B1246. The climate control unit found a problem in the rear air mix motor, linkage, or door. The rear temperature may not change when you adjust it. This Honda-enhanced code applies to Honda and Acura models that use this code.
Common causes of B1246
- Faulty rear air mix control motor
- Binding or damaged air door or linkage
- Rear air mix control motor harness is open or shorted
- Rear air mix control motor circuit poor electrical connection
- Faulty climate control unit
How to fix B1246
- Confirm the code with a scan tool and check the climate control for related faults
- Inspect the linkage and air door for binding, broken parts, or debris
- Test the motor and its position feedback at the connector
- Check the wiring for an open or short before replacing parts
- Replace the rear air mix control motor only if it and the linkage fail testing, then clear codes and retest
Sources and review
- Last updated 2026-09-29.