P1457 - Honda-Tech - Honda Forum Discussion

Honda Civic (2001 - 2005) Coupe / Sedan / Hybrid (Includes Acura EL)

P1457

Old 07-13-2017, 09:47 AM
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I have a 2001 Civic EX coupe and have a P1457 error code. this happened a few weeks ago and I replaced the evap two way bypass valve. Now the error has returned. what else could it be?
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Old 07-14-2017, 06:39 AM
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Default Re: P1457

Before you replaced the EVAP two-way valve, did it not hold vacuum? If held vacuum - then it was good. This part is the most common part to fail when P1457. Did you replace the canister at the same time?

Time to troubleshoot the rest of the EVAP system for leaks, electrical continuity and failed parts.
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Old 07-14-2017, 08:56 AM
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No I didn't replace anything else. I just easter-egged it and hoped for the best. I did look at the wiring and hoses but couldn't see any damage.
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