l3randon33

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2003 Honda CR-V EX AWD /2.4 L / 235,900 KMs
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Good Evening All,

This forum is my last ditch effort to get advice or suggestions on my ailing issue with my CR-V.

I've had a CEL on for well over a year now and being here in Ontario, Canada emissions tests are a must to renew your license.

So having said that a CEL will not pass an e-test.

Here is the list of what i have done in order to "Attempt" to fix the issue...

1) Replaced EVAP charcoal cannister.

2) Replaced EVAP Bypass Solenoid valve.

3) Replaced EVAP 2-way vent valve

4) Replaced EVAP Cannister Purge valve

5) Replaced gas cap with another OEM gas cap.

6) Replaced connector to the 2-way vent valve.

6) Replaced ECM
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After all the repairs and several smoke tests which all come back negative for leaks. The CEL remains on.

I have taken the CR-V to the same Honda dealership for ALL the repairs.

The latest visit was to inspect why the CEL came back on after having a new ECM installed with the CEL coming right back on with the exact same P1457 code.

They kept the vehicle for a week and test drove it for 25KM a day to run the EVAP monitor (so they said).

I picked the vehicle up last week and within 10 minutes of driving the vehicle the CEL came back on immediately with the P1457 code.

I am assuming they couldn't find an issue and just kept flashing the CEL to prevent it from coming on when i got the vehicle back.

They through me a line saying "Sometimes the code is stored".

Correct me if i'm wrong but what are the odds of a new ECM storing a code?

The only reason i replaced the ECM was because they told me a "driver" was shorted-out by having the 2-way valve connector ripped apart and the voltage spiked the ECM.

However, the connector and ECM was replaced and the CEL remains on.

Any ideas in what the issue might be?

They keep saying everything mechanically checks out 100% and 7 smoke tests later no holes.

Yet CEL always on literally 2-3 days after flashing it...sometimes sooner.

Thanks for any insight...

-Brandon-

EJ8_Man

Your Honda stealer took you and your money for a run. The correct way to fix this is to diagnose and test. You need a vacuum tester, a digital muli meter, and a service manual. My shot in the dark guess after looking at what all has been replaced is that you have a bad vacuum line or connection. A smoke test is not always conclusive, but a vacuum tester is. You need to find an honest mechanic that will properly test the system. Throwing parts at a faulty evap system rarely results in success in my experience. No where in my manual does it reccomend a smoke test to troubleshoot this DTC

l3randon33

Thanks EJ8_Man for the reply. I agree that the dealership is doing nothing to rectify the issue. None of the service statements i have received confirmed them performing a vacuum test on the lines. Is there anyway with the proper tools i could perform the test myself?

I own the service manual but not sure how to perform the necessary tests. I have called around to a few shops i trust but they told me only the dealership has the tools to perform the tests needed.

Thanks again.

EJ8_Man

Of course I'm not sure what manual you have, but there is a 2002 CRV manual online for free, you will need to Google to find it. Or PM me and I can send you a link.

You need the tools I mentioned in my previous post. Here are examples. I encouragne you to shop around. If you have anything like a Harbor Freight Tool store around you can pick up all of these for around $20-30 (using coupons)

Digital Multimeter:

Vacuum Test Tool:

My 2002 CRV manual has very detailed steps for every EVAP test. Follow them precisely.

Good luck

l3randon33

Hey EJ8_Man,

Just an update for you...

I had the CRV vacuum tested and the fault lied with the fuel filler neck and gas tank (well so Honda said). I only took to them since they said they would look it for free.

So i went ahead and replaced the fuel filler neck just a few weeks ago and reset the CEL within a few days the CEL came back on with the exact P1457 code.

I am thinking what are the odds of the gas tank being the issue? Never heard of the gas tank EVER being the issue for a P1457 code but i've replaced just about everything in the EVAP system at this point.

Any ideas?

Thanks again.

-Brandon-

jonshonda

I don't think that a broken EVAP system will hurt performance in any way, that is why I have left mine alone and just accept that the CEL will be on.

WDHewson

Old thread, but my 1999 CRV is very erratic with tossing a P1457,........ yet all systems seem to be fine.

I'm uncertain how the car checks for small leaks, but it may use the engine intake to pull a little vacuum on the fuel tank, and then the fuel tank pressure sensor monitors how well this small partial vacuum holds, i.e., the ramp up of the pressure curve. A leak will ramp the small vacuum to atmospheric too fast and a P1457 will be thrown.

But I think our Canadian gasoline volatility can fool Honda's "not so smart" EVAP monitoring. Too much gasoline volatility fills the vapor space rapidly, and the system gets fooled into thinking there a leak. There's a lot of off spec gasoline out there!!

But I really am guessing here!!!

l3randon33

I agree with gas specs here and vacuum intake. I now think it has something to do with pressure testing of the gas tank. I have researched other threads and sometimes the issue can lie with a faulty gas tank connector hose or fuel pressure sensor. The most logical step is to test the fuel pressure sensor and pressure test the fuel tank. As jonshonda stated fuel mileage is not greatly affected. I did confirm with a Honda technician and the P1457 code would affect fuel mileage slightly.

I know the issue is minor, but i have put in so much time and money into the issue already and would finally like to come to a conclusion and declare a moral victory in hopes of saving other owners with the same code on a wild goose chase.

-l3randon-

zen_

I had this code about 6 months ago on my 02' CR-V. Replaced the purge solenoid (the part on the end of the cannister) hoping to throw a few bucks at it for quick a fix since it's a hard problem to track down. Didn't work, so I took it to the dealer to have them look at it. $100 diagnostic later they recommended replacing the bypass control solenoid (P/N 36163-PND-A01) for reasons I didn't quite understand, but fine, they are the pros's, so I'll throw another $100 at it on that part. That didn't fix it either.

$250 later with the issue not fixed, I figured MIL on forever for this car because it was getting ridiculous for an EVAP code. About a month later, I was refueling, and noticed fuel dripping all over the ground. Filler neck was severely corroded with holes in it. After replacing the filler neck...no more 1457 code. I don't know why the bad filler neck was causing the code since it's supposed to be a cannister side fault, but it seemed that did it.