No, that is impossible.
Not unless it is also C6. You can have C1,C2,C3,C4,C5 houses of Q6 quality that are all eligible. STOP MAKING STUFF UP!
Now, if that is impossible, I wonder why they state UNDER QUALITY "Such dwellings are often built or expanded by persons who are
professionally unskilled or possess only minimal construction skills. Electrical, plumbing, and other mechanical systems and equipment may be minimal or nonexistent." Oh, and like C6, they state "
Q6 Rating is an exception because it indicates that the property is impacted by one or more deficiencies that negatively affect the safety, soundness, or structural integrity of the property. As a result, if any portion of the dwelling is rated a
Q6, the whole dwelling must be rated a
Q6. Properties with a quality of construction rating of Q6 are eligible for sale to Fannie Mae
provided any items in relation to the quality of construction that impact the safety, soundness, or structural integrity of the property are repaired "
If codes were meant for condition, then there wouldn't be any codes for new construction.
Build your house with Chinese drywall. That would be a C1 with a Q6 fail and would need to be subject to new drywall due to the Quality rating of Q6, not the condition.
Q6 rating requires subject to repair or alteration. Slowly read this re-cap over & over until you get it.
Q6 Rating indicates that the property is impacted by one or more deficiencies that negatively affect the safety, soundness, or structural integrity of the property. Anything that impacts the safety, soundness, or structural integrity of the property must be repaired "