I got the P1457 code and changed out the vent shut valve on the charcoal canister. Code came back. The TSB-01-011 (http://ww2.justanswer.com/uploads/di...ord_p01457.pdf) seems to indicate the PCM could be setting false codes. Anybody with experience? Is the dealer the only alternative?

Regards

doug

99 Honda Accordion
86 951 (Image Galleries | PCA UCR)
01 E320 (W210) 4matic Wagon (https://www.fcpeuro.com/blog/posts/w...eplacement-diy)
00 540i-6 (dykaar's Album: 2000 e39 540-6)
94 855 turbo Wagon (sold in 09)
85 535i-5 (sold in 07)
76 300D (sold in 92)
83 944 (sold in 86)
I apparently only buy cars designated by numbers

 

When I had this problem 45k ago I just replaced the two-way valve, Evap bypass solenoid, and the Vent shut solenoid. Problem never came back. I have heard the Vent Shut Solenoid can short and cause issues w/ ECU and possibly fry the ECM.