What causes B1232 on a Honda?

Evaporator temperature sensor shorted internally Signal wire pinched or shorted to ground Corroded pins at the evaporator sensor connector Climate control unit input stage at fault Moisture tracking across the sensor connector

How do I fix B1232 on a Honda?

Scan the climate control for stored sensor codes Disconnect the sensor and watch the code change Measure the sensor circuit for a short to ground or power Repair the pinched or shorted wiring found Replace the evaporator temperature sensor if it tests shorted Clear the code and retest

B1232 The climate control unit saw a short in the evaporator temperature sensor circuit

Q: What does B1232 mean on a Honda?

B1232. The climate control unit saw a short in the evaporator temperature sensor circuit. The A/C may cycle wrong and the evaporator can freeze up. 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 B1232 mean on a Honda?

B1232. The climate control unit saw a short in the evaporator temperature sensor circuit. The A/C may cycle wrong and the evaporator can freeze up. This Honda-enhanced code applies to Honda and Acura models that use this code.

Common causes of B1232

Evaporator temperature sensor shorted internally
Signal wire pinched or shorted to ground
Corroded pins at the evaporator sensor connector
Climate control unit input stage at fault
Moisture tracking across the sensor connector

How to fix B1232

Scan the climate control for stored sensor codes
Disconnect the sensor and watch the code change
Measure the sensor circuit for a short to ground or power
Repair the pinched or shorted wiring found
Replace the evaporator temperature sensor if it tests shorted
Clear the code and retest

Sources and review

Last updated 2026-10-10.