VTEC problem: Code P2646 (also 2647, 2648, 2649) - Page 10 - Honda Element Owners Club Forum
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Old 08-26-2012, 07:26 PM   #91
dom08
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2004 4WD EX AT
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P2646 rocker arm actuator

Hey guys.
I popped this code p2646 again.. The first time was 10or so months ago. An today it popped again. Last time it was solved by cleaning the oil pressure screen. Why would this pop again? How could debris get clogged again
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Old 08-27-2012, 09:47 AM   #92
ramblerdan
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When you cleaned the screen, did you also change the oil & filter? How many miles since the last oil change?

Also, have you tried reseating the connectors?

Last edited by ramblerdan; 08-27-2012 at 09:50 AM.
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Old 08-28-2012, 01:52 AM   #93
dom08
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Yes the oil was changed at the same time. Here is the exact code

"P2646- A rocker arm actuator system performance or stuck off bank 1"
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Old 08-28-2012, 09:09 AM   #94
jasoncarpenter1
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Quote:
Originally Posted by dom08 View Post
Yes the oil was changed at the same time. Here is the exact code

"P2646- A rocker arm actuator system performance or stuck off bank 1"
thats exactly what code i keep getting as you can see i have tried almost everything. have been told by some people that i could have a faulty ECM.
what do you guys think about that? e-bay has them around 50.00-150.00......
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Old 08-28-2012, 11:20 AM   #95
dom08
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Mine isn't constant though. When I start my truck after about an hour or so of it being off...drive around for 10-15 minutes and it starts to bog at 3000 rmp. The CEL will stay on this whole time keep in mind. I was thinking of replacing the oil pressure switch, any thoughts?

Edit: I did clean the screen yesterday (it was a bit dirty) and 10 minutes after erasing the CEL it came back on with the 3000 rpm bog issue

Last edited by dom08; 08-28-2012 at 11:23 AM.
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Old 08-28-2012, 06:36 PM   #96
jasoncarpenter1
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Quote:
Originally Posted by dom08 View Post
Mine isn't constant though. When I start my truck after about an hour or so of it being off...drive around for 10-15 minutes and it starts to bog at 3000 rmp. The CEL will stay on this whole time keep in mind. I was thinking of replacing the oil pressure switch, any thoughts?

Edit: I did clean the screen yesterday (it was a bit dirty) and 10 minutes after erasing the CEL it came back on with the 3000 rpm bog issue
the oil pressure switch cost 23.00 at honda, the v-tech assy-spool is 130.00.
try the small stuff first. i am split between taking to honda or just getting a ECM off of e-bay.........
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Old 08-29-2012, 11:38 AM   #97
dom08
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Try getting yours just diagnosed at Honda to see the issue and take it from there. Mine has been getting better on its own. When I erase the code it stays off for quite a bit now but I just picked up an oil pressure switch anyways
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Old 08-30-2012, 09:40 PM   #98
jasoncarpenter1
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Honda wants to charge me 49.99 for a diagnostic. am tempted to do it just to see what they say. i have a real nice snap on code reader and i keep getting the same code 2646.
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Old 11-27-2012, 02:08 PM   #99
henrybo
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code 2646

Took it to the dealer. They told me I needed a new spool valve. $478.00. Does anybody have a pic of where the spool valve is?
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Old 11-27-2012, 04:21 PM   #100
Rick92040
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See post #9 of this thread. the Spool Valve is the VTEC Solenid.
A $80. part on ebay..
http://www.ebay.com/itm/Genuine-Hond...-/260781885929
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cel , engine , jumping , limp mode , malfuntion , p2646 , p2647 , p2648 , p2649 , rpm , vsa , vtec

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