P0456 Evaporative Emission Leak

[Jeff Tichy]

Had the check engine light come on again Wednesday afternoon. Stopped by the local garage and had them scan it. Once again I've go a P0456 Evaporative Emission Leak, Very Small Leak detected showing up.



I've searched the archives for the code and no such luck. Any ideas?

 

[TRACket Paul]

From the FAQ at left:



DTC-

P0456 - EVAP Control System Leak Detected (Very Small Leak)



Description-

The PCM monitors the complete EVAP control system for the presence of a very small fuel vapor leak. The system failure occurs when a fuel vapor leak from an opening as small as 0.508 mm (0.020 inch) is detected by the EVAP running loss monitor test.



Possible Causes-

-Very small holes or cuts in fuel vapor hoses/tubes.

-Loose fuel vapor hose/tube connections to EVAP system components.

-EVAP system component seals leaking (refer to Possible Causes under DTC P0442).