00EM1Si

My check engine light is going off and the code thats showing up is P1457 Which is : Evaporative Emissions (EVAP) Control System Leakage (EVAP Canister System)... What does this code exactly mean(example: Is something broken? Is something loose or disconnected?) and what can I do to fix this problem...thanxs
This started when I installed my Skunk 2 Stage 1 cams in my 00' Si B16A2

JimBlake

I had that same code on our '98 Accord. The EVAP system includes the charcoal canister, several solenoid valves, a filter, a bunch of vacuum tubing, & a pressure sensor. The code P1457 means is the system isn't airtight, it doesn't know WHY.

The Helm manual has about 6 pages of procedure to check out each piece until you find something that doesn't work right. Mine was a solenoid valve that quit working, but maybe yours is a vacuum hose disconnected.

It shouldn't have anything to do with your cams, except maybe you pulled off a vacuum hose or unplugged a wire for a valve...

00EM1Si

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JimBlake &raquo;</TD></TR><TR><TD CLASS="quote">I had that same code on our '98 Accord. The EVAP system includes the charcoal canister, several solenoid valves, a filter, a bunch of vacuum tubing, & a pressure sensor. The code P1457 means is the system isn't airtight, it doesn't know WHY.

The Helm manual has about 6 pages of procedure to check out each piece until you find something that doesn't work right. Mine was a solenoid valve that quit working, but maybe yours is a vacuum hose disconnected.

It shouldn't have anything to do with your cams, except maybe you pulled off a vacuum hose or unplugged a wire for a valve...
</TD></TR></TABLE>

Thank you Jim!! Some mechanic was telling me it was my O2 censor...and I knew it wasn't the O2 censor ....So Where is the vacuum hose located and the wire for the valve....

00EM1Si

TTT

JimBlake

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Krazipeenoi &raquo;</TD></TR><TR><TD CLASS="quote">...So Where is the vacuum hose located and the wire for the valve.... </TD></TR></TABLE>You gotta find a Helm book for your car. I don't have a 2000 Civic, & I bet it's not exactly the same as a '98 Accord. BTW, the Accord has several valves in the EVAP system, the first one should be at the intake manifold with a hose leading to wherever the charcoal canister is.

00EM1Si

I also have this problem whenever I engage VTEC in 3rd and 4th gear.....my engine has a hard time engaging VTEC it laggs at 5.7 RPMS at 3rd gear then VTEC kicks in...but on 4th gear....it stays at 5.5 and it doesnt go any higher.... but my 1st and 2nd gears are fine when VTEC engages...I have no idea why this is happening...Im wondering if the problem with the Emissions (EVAP) Control System Leakage (EVAP Canister System) To cause my VTEC to act this way?? Im guessing its the timing or something and plus the cams were never tuned yet....

00EM1Si

TTT

JimBlake

Even though the EVAP leak has nothing to do with your valvetrain - nothing to do with your engine at all, really... Is it possible that your ECU is refusing to engage VTEC just because it's showing a CEL?? Does anyone know whether any unrelated CEL will prevent VTEC activation??

00EM1Si

I havent changed my spark plugs in a while...maybe that would help?

hondatim

changing plugs will help nothing with this code. This code is purely related to the evaporative emissions system on the vehicle. A P1457 can be caused by a multitude of parts related to the system ie.: canister purge solenoid, canister vent shut valve, 2 way bypass valve, many hard plastic lines, many rubber hoses, evap canister, fuel tank pressure sensor, etc., etc.

In order to keep from just throwing parts at the car in an attempt to repair, would suggest Honda service manual, hand vacuum pump and a good multimeter.

B20Monster

a lot of things people over look is the fuel cap. make sure you atleast clicked it 3 times when you last took it off. and check to see if the rubber seal isnt cracked. hope that helps.. good luck.

JimBlake

P1456 & P1457 are both for the EVAP system, but 1456 is for the gas tank. That's the one you get if you don't tighten your gas cap. Or if your gas tank itself isn't airtight.

P1457 is for a leak in the charcoal canister or it's plumbing system.

MightyMouseTech

Don't just start changing parts. Because your car is a 2000, it has a much more complicated EVAP system than 1999 and earlier. Most of the valves are above the gas tank so that will need to be dropped to check them. On the 2000 Civic, the most common reason for a 1457 is the two way valve (because it is seized to the solenoid that needs to be replaced) and it's associated solenoid valve. I have replaced several of these, and are more common to do on the 2000 and up, than changing the usual vent shut valve on the earlier cars.

hondatim

This is absolutely correct. Have had same experiences with these also.

Also, have you happened to have installed stereo eqipment in trunk lately(ie. amps, subs)

Have seen this code attributed to someone installing equipment in trunk and using scews through floor of trunk to secure. Only to find out that the screws they used punctured 2 way valve, line, or tank and created leak.

I'm sure MightyMouseTech knows what I'm talking about, huh (LOL)

00EM1Si

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondatim &raquo;</TD></TR><TR><TD CLASS="quote"> Also, have you happened to have installed stereo eqipment in trunk lately(ie. amps, subs) </TD></TR></TABLE>

The only thing I have in my trunk is a sub which is not installed and its not bolted down in my trunk but this happened when I installed my skunk2 cams..I douuno what the machanic did to my car to make this happened...so I should check the the two way valve if its disconnected or damaged? and its located above the gas tank?

hondatim

Not necessarily the 2 way valve. Have also seen canister vent shut valves freeze up due to corrosion from salt (winters can be hard on cars here due to salt on roads) I think that there may also be a bulletin on this car for this issue. It has you replace the failed canister vent shut valve and possibly ECU if valve caused high resistance and damages circuit to ECU that controls the valve.

The only thing I can't remember is if this bulletin pertains to this car also, or just the Accord.

Anyone else...

00EM1Si

again thanx you guys soo much for helping me out...im just gonna look around my engine bay to see if anything is dissconnected or something because I dont have a helm manual to see where the canister is located.....i mean my car is only 4 years old...i douuno if something was damaged and Its garaged kept....

00EM1Si

I think i found the problem...theres a hose that connected to the canister then it leads to a censor right next to the valve cover and at the other end of the censor is disconnected and its unplugged but I cant find the hose thats connected to it...cuz i mean there is something missing or disconnected at the censor and u can see that a hose was suppose to be there. I think this happened when I got my skunk2 intakemanifold installed....Im gonna have it checked tommorow to see if its my problem