Severity: Low
Safe to drive. Schedule a diagnosis soon.
What P0457 means
The EVAP system detected a leak and the computer believes the fuel cap is loose or off.
Symptoms
- Message to check the fuel cap
Common causes
Most likely first
- 1Fuel cap not clicked tight
- 2Damaged cap seal
- 3Aftermarket cap that does not seal
How we diagnose it
- Tighten or replace the cap; the light clears after several drive cycles
Every vehicle sets codes under its own conditions. We check the factory diagnostic steps and service bulletins for your VIN, so the repair targets the actual cause.