Goodman HVAC Error Code 12: How to Fix It

Medium 30-60 minutes Medium Severity Verified June 2026
Error Code
12
Brand
Goodman
Product Type
hvac
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
Error code 12 on your Goodman HVAC system indicates the AC compressor is drawing too much current. This can be caused by a faulty start capacitor, a failing compressor, or electrical issues. Follow these steps to diagnose and fix the problem.
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Tools You'll Need

How to Fix Error Code 12

  1. Turn off power

    Always disconnect power before servicing to prevent electric shock or injury.
  2. Check the start capacitor

  3. Inspect the compressor wiring

  4. Test the compressor windings

  5. Check for a hard start kit or contactor issues

Parts You May Need

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When to Call a Professional

If the compressor windings test faulty (shorted or open) or if you are uncomfortable working with high voltage, call a licensed HVAC technician. Replacing a compressor is a complex, expensive job requiring specialized tools.

Frequently Asked Questions

What does error code 12 mean on a Goodman AC?
Error code 12 indicates the compressor is drawing too much current (overcurrent) and the system may shut down to protect itself.
Can a bad capacitor cause error code 12 on Goodman?
Yes, a failing start/run capacitor can cause the compressor to draw high current, triggering error code 12.
How do I reset error code 12 on my Goodman system?
Turn off the power to the unit for 5 minutes, then restore it. If the error returns, there is an underlying issue that needs repair.
Is it safe to replace a Goodman AC capacitor myself?
You can replace a capacitor if you have basic electrical skills and tools. Always discharge the capacitor and turn off power first.
How much does it cost to fix Goodman error code 12?
If it's a capacitor, the part costs $10-$30. Compressor replacement may cost $1,000-$2,500 including labor.