P0457
EVAP System Leak Detected (fuel cap loose/off)
P0457 is an OBD-II diagnostic trouble code meaning: EVAP System Leak Detected (fuel cap loose/off). Common causes: loose or missing fuel cap, damaged or worn evap hoses. Estimated repair cost: $6–56.
Symptoms
- Check Engine Light Is On
- The smell of gasoline in or near the car
- Slight degradation in fuel economy
Causes
- Loose or missing fuel cap
- Damaged or worn EVAP hoses
- EVAP purge valve malfunction
- Leak in fuel tank
How to Fix
- Check and close the fuel tank cap tightly
- Inspect the EVAP system hoses for damage.
- Check the EVAP system purge valve
- Perform a leak test on the EVAP system
Related codes
Error P0457 by Vehicle Brand
FAQ
What does the P0457 code mean?
P0457 is an OBD-II diagnostic trouble code that indicates: EVAP System Leak Detected (fuel cap loose/off)
What causes a P0457 error code?
The most common causes of P0457 include: Loose or missing fuel cap; Damaged or worn EVAP hoses; EVAP purge valve malfunction; Leak in fuel tank.
How do I fix a P0457 diagnostic trouble code?
To fix P0457: Check and close the fuel tank cap tightly. Inspect the EVAP system hoses for damage.. Check the EVAP system purge valve. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0457?
Do not drive — repair immediately
How much does it cost to fix P0457?
The estimated repair cost for P0457 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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