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P0456 Diagnostic Trouble Code Discussion for September 2017

EVAP System Small Leak


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Trouble Ticket Help Requests for DTC P0456
Help Request Posted
2006 Jeep Grand Cherokee Limited 4.7L Poor Idle Quality, MIL Lamp on VIN: 1J4HR58N66
P0456: EVAP System Small Leak Detected. Greetings! Nothing obvious noticed in evap lines, etc. Hooked up smoke machine to rear evap line under hood - smoke comes through NVLD motor whether solenoid is on or off. Alldata's description of the system just isn't working for me - maybe it's because we're...
September 27, 2017