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VTEC problem: Code P2646 (also 2647, 2648, 2649)

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cel element 2003 engine engine light jumping limp mode malfuntion p2646 p2647 p2648 p2649 rpm vsa vtec
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41 - 60 of 677 Posts
#41 ·
Yes, VTEC is all about oil pressure at the head. I don't know whether the oil pressure switch on the block is relevant to that code.

"Switch assy., valve timing oil pressure," Honda p/n 37250-PNE-G01, lists for $58 retail.

Before replacing anything, I'd change the engine oil and filter, clean the VTEC screen (or just replace it—the assembly, p/n 15840-RAA-A00, can be had for for $10–$15), and reseat the electrical connectors.
 
#42 ·
does someone have a source that they can lead me to where to get it online? i dont want to give honda $100 for something that is worth half that price
 
#43 · (Edited)
Online vendors include (in alpha order):
Bernardi (Massachusetts)
Cheap Honda Parts (California)
College Hills Honda (Ohio)
Honda Parts Deals (Rhode Island)
Honda Parts Now (California)
Honda Parts Store (Maryland)
Honda Parts Unlimited (Arizona)
Majestic (Rhode Island)
My Honda Parts Store (Oklahoma)
Real Honda Parts (Texas)

The part numbers in post #45 above are links to hondapartsnow.com (I'm not endorsing that vendor in particular; I just find their site easy to search). The illustration in post #18 above does also.

Have you read through these threads?
http://www.elementownersclub.com/forums/showthread.php?t=28415
http://www.elementownersclub.com/forums/showthread.php?t=31547
http://www.elementownersclub.com/forums/showthread.php?t=39822
 
#44 ·
ramblerdan said:
Yes, VTEC is all about oil pressure at the head. I don't see what the oil pressure switch on the block has to do with it.

"Switch assy., valve timing oil pressure," Honda p/n 37250-PNE-G01, lists for $58 retail. $100 for that part is quite a markup.

Before replacing anything, I'd change the engine oil and filter, clean the VTEC screen (or just replace it—the assembly, p/n 15840-RAA-A00, can be had for for $10–$15), and reseat the electrical connectors.
Click to expand...
the screen in located on the vtec oil pressure switch? i dont have my truck with me right now so i can't go look at it right now.

yes ive searched the threads, and have learned alot within the hour on this problem. Thank you VERY much for helping me out! i really appreciate it!
 
#49 ·
has anyone gotten the front filter (#11)... the bolts (#19)are too long to get out without hitting the pulleys. and the a/c compressor
 
#52 ·
It would be the strainer that i got out.
i took that out and cleaned it, now will probably order a new one in for the $2 its worth and just replace it.
after cleaning the strainer i deleted the code and it hasnt come back on:)

i will work at the fitler assy. (#10) today. Thanks alot lizzurd for clarifying that!
also thanks alot ramblerdan for helping out alot also!
 
#55 ·
dom08 said:
thats the one. with the strainer at the bottom half. it was quite clogged.
should i worry about changing/cleaning the filter (#11) if i cleaned the strainer out?
Click to expand...

In the 9 years this motor has been in service i have never sold one. It's up to you if you want to put all that work in changing it if your problem is fixed.
 
#56 ·
so its not like its needed, as long as the rear screen is clear? the rear one i would think is more important as it is right before the oil pressure switch.... correct?
 
#57 ·
I am not saying it isn't needed. It is there for a reason. All i am saying is that i have never seen any one replace it.

If it was me and the cleaning the other screen solved the issue i would leave it. If i had a code pointing towards an issue with the VTC actuator yes i would rip it apart and change it.


As i said in my last post it is a lot of work to get in there to remove it.

The choice is your as to wether you replace it or not.
 
#58 ·
my code just said "rocker arm actuator system performance or stuck off blank 1"
as soon as i cleaned the screen near the switch i deleted the code and it seems to run fine now.
 
#59 ·
is this it?

hi, is this the plate that needs to come off to clean the screen? is there a special gasket that's needed to put it back together? is cleaning this screen pretty simple? (what i'm really asking is: can i do it?... i've installed 2 hitches, wiring harnesses, changed differential fluid, put on new hatch struts, etc... so i'm not totally clueless) :)
 

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#60 · (Edited)
> is this the plate that needs to come off to clean the screen?

Behind that plate is one of the two VTEC screens, "Filter assy., VTC," Honda p/n 15845-RAA-A01 (ref. #11 in illustration SCV3-E1010). As Lizzurd noted in post #76, you will have to remove the serpentine belt, tensioner, and power steering pump to get to it.

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