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16840/P0456/001110 - EVAP System: Very Small Leak Detected
Possible Symptoms
Malfunction Indicator Light (MIL) active
Possible Causes
Fuel Cap not fully attached
Evaporative Emission (EVAP) System leaking/faulty
Possible Solutions
Check Fuel Cap
Check Evaporative Emission (EVAP) System
Special Notes
On 2006 and 2007 Passat, check fuel cap part number. Updated version ends in "G". Please refer to Technical Bulletin 2016757 for details.