What It Means
Communicating system module contains invalid or corrupted shared data.
Goodman All Systems
Goodman Error Code d1
Troubleshooting guide for the Goodman system fault d1.
Possible Causes
- Invalid or corrupted shared configuration data in module.
- Network data incompatible with integrated control module.
Not sure which one it is — or if it's none of these? Try ACLogics today.
Disclaimer: This information is for general reference. Error codes can vary by model and production year. Always refer to your machine's specific manual and the information printed on the unit itself.
New to this code? Click to see why this happens
Full Diagnosis
Air conditioner/heat pump is wired as part of a communicating system and integrated control module contains invalid shared data or network data is invalid for the integrated control module.
All Recorded Causes
Verify Before Replacing Parts
- Confirm the exact Goodman model family and default context before acting on a generic code description.
- Confirm board LEDs, wiring polarity, and model compatibility before replacing control boards — this Goodman fault points at the most likely cause listed above.
- Check for intermittent communication faults caused by connectors, moisture, or damaged harnesses, and rule out the next candidate on the list.
- After the correction, run the system long enough to confirm the default fault does not return under normal load.
Not sure which system this Goodman code is on?
ACLogics has guided diagnostics for 20 Goodman fault codes and asks the right questions to narrow it down.
