Check engine light on on 1998 Honda Accord

Any help will be greatly appreciated.. Two codes came up p1739-3rd clutch transmission switch failure and P1457 Evap emission syst.. Control syst leakage Evap canister area... What needs repaired and will this be pricey?.. Will transmission flush fix? Thank u in advance!!

by in Columbus, OH on January 21, 2013
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1 answer 4 comments
ANSWER by , January 23, 2013
How many miles on car? 4 or 6 cyl.?
COMMENT by , January 23, 2013
4 cyl...and has 135,350 miles on it...98 accord ex
COMMENT by , January 23, 2013
For P1739 , replace the 3rd clutch pressure switch and do an ATF drain & fill(use only Honda fluid). For EVAP (P1457) best to have that diagnosed at a shop that's equipped with tools and info necessary. Dealer might be best choice , depending on what's available in your area.
COMMENT by , January 23, 2013
Thank you for your help...i have one more question?...Can this possibly mean that my transmission is slipping or going bad?
COMMENT by , January 23, 2013
That pressure switch monitors clutch pressure (for that hydraulic circuit , to help ease the 'shift shock' when gear changes. Probably , you don't and won't feel much of a difference short term.No , it doesn't mean the trans is going bad. I haven't changed that many on Accords' , but I've changed quite a few on Pilots and Oddyseys , with no other noticable effects to the trans.