What causes B1223 on a Honda?

Faulty rear blower motor Binding or damaged air door or linkage Rear blower motor harness is open or shorted Rear blower motor circuit poor electrical connection Faulty climate control unit

How do I fix B1223 on a Honda?

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 blower motor only if it and the linkage fail testing, then clear codes and retest

B1223 The rear climate control unit found a problem in the rear blower motor circuit

Q: What does B1223 mean on a Honda?

B1223. The rear climate control unit found a problem in the rear blower motor circuit. The rear blower may run at one speed only or not at all. Applies to Honda and Acura models that use this code.

Category: Body
Severity: Body Warning Light
Applies to: Honda and Acura models that use this code

What does B1223 mean on a Honda?

B1223. The rear climate control unit found a problem in the rear blower motor circuit. The rear blower may run at one speed only or not at all. This Honda-enhanced code applies to Honda and Acura models that use this code.

Common causes of B1223

Faulty rear blower motor
Binding or damaged air door or linkage
Rear blower motor harness is open or shorted
Rear blower motor circuit poor electrical connection
Faulty climate control unit

How to fix B1223

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 blower motor only if it and the linkage fail testing, then clear codes and retest

Sources and review

Last updated 2026-09-29.