Goodman HVAC Error Code 16: How to Fix It

Medium 30-45 minutes Medium Severity Verified June 2026
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Error Code
16
Brand
Goodman
Product Type
hvac
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
30-45 minutes
Goodman HVAC error code 16 means the outdoor coil temperature sensor is open or faulty. This sensor monitors the temperature of the outdoor coil, and when it malfunctions, the system may not operate correctly. Follow these steps to diagnose and replace the sensor.
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Tools You'll Need

How to Fix Error Code 16

  1. Turn Off Power

    Always disconnect power before servicing to avoid electric shock or equipment damage.

  2. Locate the Sensor

  3. Remove and Inspect the Sensor

    Be gentle to avoid breaking the sensor or connector.

  4. Test the Sensor Resistance

    Ensure the system is off before testing.

  5. Replace the Sensor

    Use a sensor specified for your model to ensure proper operation.

  6. Reassemble and Test

Parts You May Need

Outdoor coil temperature sensor
Check Price on Amazon
Outdoor coil temperature sensor
Check Price on Amazon
Outdoor coil temperature sensor
Check Price on Amazon
Outdoor coil temperature sensor
Check Price on Amazon
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When to Call a Professional

If the error code remains after replacing the sensor, or if you are uncomfortable working with electrical components, contact a licensed HVAC technician. The control board may need inspection or replacement.

Frequently Asked Questions

Can I bypass the outdoor coil temperature sensor?
No, bypassing the sensor can cause the system to operate incorrectly or sustain damage. Replace it with a proper sensor.
What causes the outdoor coil temperature sensor to fail?
Normal wear, corrosion, physical damage, or electrical surges can cause the sensor to fail.
Will a bad sensor cause the AC to blow warm air?
Yes, because the system may not cycle correctly or may lock out due to the fault, resulting in no cooling.
How do I find the correct replacement sensor for my Goodman unit?
Check your unit's model number and look up the compatible sensor in the parts list. Generic 10k ohm sensors often work, but confirm specifications.
Can I test the sensor without a multimeter?
No, a multimeter is required to check resistance. Without it, you can only inspect for visible damage.

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