P0456 on Your 2024 Toyota Camry
A P0456 on your 2024 Camry (all-new 9th generation) means a very small EVAP leak—the tiniest the system detects. The new Camry with the 2.5L hybrid powertrain uses Toyota's VSV (Vacuum Switching Valve) EVAP system and is fully under warranty. Gas cap first.
Symptoms
- Check engine light with P0456
- No drivability issues
- Gas cap may feel slightly off
- EVAP monitor incomplete
Top Causes
- Gas Cap Seal (Very High Likelihood): Tiny imperfection. Warranty-covered.
- VSV (Vacuum Switching Valve) (Medium Likelihood): Toyota purge control. Warranty-covered.
- Charcoal Canister (Low-Medium Likelihood): Factory issue. Warranty-covered.
- EVAP Line Connection (Low Likelihood): Assembly gap. Warranty-covered.
- ECU Software (Low Likelihood): Calibration. Warranty-covered.
What to Do
Tighten the gas cap and drive 2–3 days. If P0456 persists, your Toyota dealer will diagnose free using Techstream.
Warranty
Your 2024 Camry is covered by Toyota's 3-year/36,000-mile warranty through 2027. Federal emissions (8yr/80k) extends through 2032.
Safe to Drive?
Yes. P0456 has zero impact on the hybrid powertrain, performance, or any features.