P0455
Evaporative Emission Control System Leak Detected
Description
Evaporative Emission Control System Leak Detected (gross leak) This body system diagnostic trouble code indicates an issue with the vehicle's comfort, safety, or convenience systems.
OBD Codes Details
Possible Causes
Blown fuse, faulty switch, damaged wiring harness, poor electrical connection
Solution
Check fuses and relays, inspect wiring harness, test switches and sensors, repair damaged circuits
Symptoms
- Check engine light illuminated
- Noticeable fuel odor around the vehicle
- Fuel cap loose, missing, or not sealing
- Failed emissions test
- No major drivability symptoms in most cases
Diagnostic Recommendations
- Check fuel cap first for a loose or missing seal
- Inspect EVAP hoses and canister for disconnection or damage
- Perform a smoke test to pinpoint the large leak
- Test purge and vent solenoid operation
- Inspect fuel tank and filler neck for damage
Repair Cost Estimate
- Fuel cap replacement: $20-50
- Smoke test diagnostic: $80-150
- EVAP canister replacement: $200-500
- EVAP hose/component repair: $100-350
- Total diagnostic and repair: $150-900
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Fact-checking completed
Verified by:
Pavel Volkov
Created:
Last updated:
Information verified against official sources
Official Sources
Society of Automotive Engineers
Official OBD-II diagnostic trouble codes standard (SAE J2012)
Automotive engineering standards organization
International Organization for Standardization
International standard for vehicle diagnostic systems
International standards for automotive diagnostics
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