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 EGR valve before checking the feedback circuit; a high signal can be wiring, ground, reference, or sensor related.
Useful checks before replacing parts
- Check EGR sensor reference voltage, signal wire, ground, connector condition, and terminal tension.
- Compare EGR command with feedback data and watch for stuck-high readings while moving the harness.
- Inspect the EGR valve or feedback sensor for sticking, contamination, or mechanical position errors.
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.