Code status
Needs verification
Not yet verified against SAE J2012_202509 / J2012DA. Treat unverified rows as a lookup aid, not repair authority.
- System
- Emissions
- Scope
- iso-sae-controlled-p0
- Standard
- SAE J2012 / ISO 15031-6
- Source
- legacy-import
Diagnostic boundary
A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.
Do not assume a very small leak is harmless; it can keep readiness monitors incomplete and may require precise leak testing.
Useful checks before replacing parts
- Check the fuel cap seal, filler neck, tank fittings, EVAP hoses, purge valve, and vent valve for minor leaks.
- Use a smoke machine or manufacturer leak-test routine because very small leaks are often not visible.
- Review whether the code sets after refueling, temperature swings, or repeated monitor attempts.
Related OBD-II codes
These nearby emissions entries can help compare wording and fault area. They may share the same verification status as the source database.