P1422 Fuel Tank Small Leak
What does P1422 mean on a Toyota?
P1422 — Fuel Tank Small Leak. This Toyota-enhanced code applies to Camry, Corolla, RAV4.
Common causes of P1422
- Seeping fuel pump seal O-ring
- Pinhole in the filler neck
- Aging tank vent hose
- Loose hose clamp at the tank
- Small crack in the tank seam
How to fix P1422
- Smoke test focused on the tank area
- Inspect the pump seal and filler neck
- Check hose clamps
- Test with a full versus near-empty tank
- Reseal or replace the leaking joint