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 the smallest visible issue is the cause; small EVAP leaks often require a controlled smoke or pressure test.
Useful checks before replacing parts
- Inspect the fuel cap seal and filler neck first if the vehicle has a removable cap.
- Smoke-test the EVAP system when basic cap and hose checks do not identify the leak.
- Check purge and vent valves for sealing, plus tank-top fittings and hoses that may be hard to see.
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.