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P0456 Diagnostic Trouble Code Discussion for October 2021

EVAP System Small Leak

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Trouble Ticket Help Requests for DTC P0456
Help Request Posted
2010 Jeep Wrangler Unlimited Sahara 3.8L MIL Lamp on VIN: 1J4BA5H12A
P0456: Evap. This Jeep has has codes P0456 & 457... Also Loose Gas Cap message. Put on a factory gas cap, cleared the codes,but the loose gas cap message won't go off. Any ideas what to look for as far as the codes and at least, how to get this message off or reset...
October 04, 2021