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P0440 Diagnostic Trouble Code Discussion for May 2016

General EVAP System Failure


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Trouble Ticket Help Requests for DTC P0440
Help Request Posted
2001 Toyota 4Runner 3.4L MIL Lamp on VIN: JT3GN86R91
P0440: EVAP Control System Large Leak Detected. Vehicle needs to pass emissions. We tested the solenoids and they test fine. Smoke test shows smoke coming from the filler neck by the gas cap. We are thinking the vacuum switching valve (not electric) on the canister may be the problem. We can not find any in...
May 10, 2016