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Old 02 Oct 2007, 04:48 pm
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Default evap leak code po1457 2004 honda pilot 3.5?

evap leak checked for leaks with smoke found none also checked cap also good replaced bypass evap valve still have problem i can watch the fuel pressure sensor and with the car off i have 1.5volts should be 2.5 with cap off start up car than it gose up to 2.5 also jumped out purge solinoild to any other ideas
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Old 02 Oct 2007, 04:51 pm
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this is a note from a Honda troubleshooting tips publication a while back concerning the P1457. It may helpGoing buggy trying to troubleshoot DTC P1457(EVAP canister system leakage) in a ’03–04 Pilot?Check for a twisted EVAP system purge hosebetween the purge valve and the service port onthe engine compartment bulkhead. If the hose istwisted, it can cause either a restriction or ablockage.A blockage is easy to troubleshoot; it’s arestriction that causes all the troubleshootingheadaches. A restriction can cause the problem tobe intermittent, to pass the EVAP System FunctionTest, or both. It’s a good idea to run the functiontest with the fuel tank level under 1/4 of a tank(lower is better). A larger volume of air space inthe tank makes a restriction evident; a smallervolume can mask the problem.If a twisted hose is the culprit, the fix is easy. Justloosen the hose, straighten it out, and retighten it.If the function test detected this problem, makesure you check your repair by doing the test againafter straightening the hose.I also have a pdf of the advanced troubleshooting guide for that code that may help but I can't attach to this post; email me if you want me to send it to you separately. I don't know if it will tell you anything you haven't seen yet but it you may find something you overlooked if you read through it.hope that helps
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Old 02 Oct 2007, 04:54 pm
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EVAP leak code P1457 (Control cannister)Look for a leak at the cannister under the vehicle.
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