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Ask a QuestionSearch for P0456 Questions - Page 1 of 1


Check engine light is on. Took to replace gas cap and 55 miles later MIL came back on. Was told a smoke test is the thing to do. p0456. small evap leak. 1) what is an appropriate cost for smoke test? 2) Is it hard to find a small evap leak using a smoke test? 3 Is there an alternative to a smoke test?


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