Code 52-01 OCT Open

What does 52-01 mean?

The Outdoor Coil Thermistor (OCT) sensor circuit is open, meaning its resistance is too high. Defrost cycles will always run for the maximum time.

• Break in the wiring to the OCT sensor.
• Loose or damaged connector for the OCT sensor.
• Failing OCT sensor itself.
• Problem with the PCM (Processor Control Module) board.

Click steps to track your progress.

1. 1

   Visually inspect the OCT sensor wiring and its connector for any breaks, cuts, or loose connections.

2. 2

   Ensure the OCT sensor is securely plugged into its connection point.

3. 3

   If the wiring appears intact, the OCT sensor itself may need to be replaced by a technician.

4. 4

   If the sensor and wiring seem fine, a professional may need to check the PCM connection and resistance values.