H23 — Evaporator temperature sensor N1 closed or disconnected

What does H23 mean?

The first evaporator temperature sensor (N1) is either short-circuited (closed) or disconnected. This affects the accurate measurement of the evaporator's temperature.

• The evaporator temperature sensor (N1) is damaged.
• Wiring to the sensor is loose or broken.
• The sensor has become disconnected.
• Short circuit in the sensor wiring.

Click steps to track your progress.

1. 1

   Inspect the N1 evaporator temperature sensor for damage.

2. 2

   Check the sensor's wiring and connector.

3. 3

   Ensure the sensor is properly installed.

4. 4

   Turn off the unit, unplug it, wait 30 seconds, and plug it back in to reset.