Methodology

How sources and confidence are handled

Manufacturer support pages and manuals are preferred. Repair sites and communities are treated as secondary context.

Confidence levels

official: manufacturer support page or official documentation backs the record.
manual-backed: an appliance manual or service document backs the record.
repair-backed: reputable repair guidance supports the record, but official confirmation is still preferred.
community-only: community reports exist, but the page needs stronger verification.
unverified: do not index until reviewed.

Editorial rules

Use cautious wording such as "usually indicates" and "common causes include".
Do not copy manuals verbatim.
Do not present a code meaning as an exact diagnosis.
Show last verified dates on indexable detail pages.