Useful checks before replacing parts
- Check vent valve connector fit, terminal tension, power feed, control circuit continuity, and ground path near the rear of the vehicle.
- Inspect for corrosion, water intrusion, dust, road debris, and broken wiring around the canister and vent valve.
- Command the vent valve with a scan tool if available and compare command state with circuit voltage and valve response.
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.