Goodman GMVM97 furnace code d4: Invalid Memory Card Data
Professional repair
What does d4 mean on a Goodman GMVM97 furnace? The control rejected the memory card — cards are model-specific and a mismatched card will be refused.
Before you touch anything: the six signs that mean stop troubleshooting and call a pro →
Correct card from the distributor.
What causes it (in order of likelihood)
- Memory card doesn't match this model TECH
Parts for this code
No specific part number is verified for this code — it typically points at wiring, power, a blown fuse, or communication between components rather than one standard replacement part. If your diagnosis does land on a replaceable component, match its part number against your model's parts list before ordering.
Questions about this code
What does d4 mean on a Goodman GMVM97 furnace?
The control rejected the memory card — cards are model-specific and a mismatched card will be refused.
How do I fix Goodman GMVM97 furnace code d4?
Cards are model-specific, and a mismatched card is refused. There's nothing to adjust yourself; a technician needs the correct card for your model.
How much does it cost to fix Goodman GMVM97 furnace code d4?
Cost depends on obtaining the correct card from a distributor and the visit time. If the wrong card came from a recent repair, ask about correcting it.
Applies to
GMVM97
Different Goodman generations use different code maps. If your series isn't listed, don't assume this meaning — check your blower-door label.
Verified against Goodman GMVM97 Service Manual, p.66/68
Last verified 2026-07-06 · page updated 2026-10-03 · how we verify
Related Goodman furnace codes
These codes use the same modulating furnace (gmvm97) — dual 7-segment display system.