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T065

T065 - Circuit B Saturated Temperature Transducer Failure

Carrier · Air Conditioning

What does T065 mean?

The temperature sensor for Circuit B has failed. The system will stop Circuit B to prevent damage or inaccurate readings.

Common Causes

  • Faulty temperature sensor
  • Wiring error to the sensor

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect the wiring connected to the temperature sensor for any visible damage.

  2. 2

    Ensure the sensor is properly seated and connected.

  3. 3

    Contact a qualified technician to test and replace the sensor if necessary.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

A051A051 - Compressor 1 Stuck On FailureA052A052 - Compressor 2 Stuck On FailureA055A055 - Compressor 1 Stuck On Failure (Circuit B)
Source: Carrier Air Conditioning
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