Brand: Not Applicable (DTC Code) · SKU: P04560 · MPN: P04560 · Category: Components
The P0456 diagnostic trouble code (DTC) indicates a 'Small Leak Detected' in the vehicle's Evaporative Emissions (EVAP) system. This system is designed to trap fuel vapors from the fuel tank in a charcoal filter and divert them into the engine to be burned when the vehicle is running, preventing them from escaping into the atmosphere. When the Powertrain Control Module (PCM) tests the system, a failure to maintain the correct fuel tank pressure suggests a leak is allowing vapors to escape from the fuel tank or associated hoses and parts. A leak as small as 0.508 mm (0.020 inch) can trigger this code.
| Common Symptoms | Check Engine Light illumination, potential faint smell of gas, slight decrease in fuel economy |
|---|---|
| System Monitored | Evaporative Emission Control System (EVAP) |
| Leak Size Indicated | Small Leak |
| Warranty | Not Applicable (DTC Code) |
| Weight | Not Available |
| Dimensions | Not Available |
DTC P0456 signals that the vehicle's PCM has detected a very small leak within the EVAP system responsible for managing fuel vapors. This leak allows vapors to escape, failing the system's pressure test. Common causes include a loose or damaged gas cap, small leaks in the fuel tank, cracked or rotted fuel lines/hoses, a cracked charcoal filter canister, or a damaged/stuck purge solenoid or vent valve.
Yes, this DTC P0456: Evaporative Emissions System Small Leak Detected (P04560) is 100% genuine Not Applicable (DTC Code) hardware. All our products are verified by certified technicians and come with clean serial numbers ready for service contract registration.
This DTC P0456: Evaporative Emissions System Small Leak Detected includes our standard 3-Year Warranty covering all manufacturing defects. We also offer advanced replacement options for minimal downtime.
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