Why a permanent trouble code can remain after a repair
Keep permanent-code status separate from current symptoms and ordinary scan-tool clearing, and prepare a useful follow-up record.
Sources checked 7 September 2026 · English
Learning center
Use the code directory for a definition, then preserve the context needed to interpret the scan. The guide below states its scope and links to its sources.
Useful tools
Printable scan worksheet — record vehicle details, code status, symptoms and source references without uploading your notes.