P0457 means evap leak detected (fuel cap loose/off). The system specifically suspects the fuel cap — it's loose, missing, or not sealing. This is the friendliest EVAP code y
You can keep driving — get it checked when convenient.
The system specifically suspects the fuel cap — it's loose, missing, or not sealing. This is the friendliest EVAP code you'll ever get.
Tighten until it clicks.
Replace it.
New cap fixes it.
Prevents sealing even with a good cap.
Typically $0–$30
Tightening is free; a new cap is typically $15–$30. Costs are estimates and vary by vehicle, location, and shop.
Safe to drive. Tighten or replace the cap; the light usually clears itself within a few drive cycles.
Typically $0–$30. Tightening is free; a new cap is typically $15–$30.
You can keep driving — get it checked when convenient.
The most common cause is loose gas cap. Tighten until it clicks.