p0457
Moderate
Subaru · SUVs & Crossovers
EVAP System Leak Detected (gas cap loose/missing)
Quick Answer
Error code P0457 on your Subaru SUVs & Crossovers means: EVAP System Leak Detected (gas cap loose/missing). This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Stop vehicle and locate fuel door
2
Remove and inspect gas cap for damage
3
Clean fuel filler neck of debris
4
Reinstall or replace gas cap with correct OEM type
5
Clear code and test drive to verify
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
OEM gas cap
Cleaning cloth
Related Error Codes