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 replace the gas cap from this code alone; pressure-sensor response and circuit plausibility are the starting points.
Useful checks before replacing parts
- Watch EVAP pressure data while commanding purge and vent states if the scan tool supports it.
- Inspect the pressure sensor, connector, tank harness, hoses, and restrictions that can delay pressure response.
- Compare freeze-frame conditions with fuel level and temperature because EVAP monitors are condition-sensitive.
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.