Symptoms of P0467
- Check-engine light, often with no obvious change in how the car drives.
- A failed emissions test or incomplete readiness monitors.
- Sometimes a faint fuel-vapour smell (on EVAP codes).
Common causes of P0467
- A worn catalytic converter or an oxygen/air-fuel sensor reading out of range.
- EVAP leaks — a loose or failed gas cap, cracked hose, or purge/vent valve.
- Exhaust leaks, fuel-trim problems, or a fault in a related monitor.
Useful checks before replacing parts
- Check purge flow sensor signal voltage, reference voltage, ground integrity, purge command, freeze-frame data, and related low-input codes.
- Inspect for short-to-ground faults, open reference circuits, damaged wiring, corroded connectors, sensor contamination, and restricted purge passages.
- Verify whether the signal remains low key-on, only during purge, or only under vibration or heat.
Related OBD-II codes
These nearby emissions entries can help compare wording and pin down the fault area.