How To Fix Honda P2647: “A” Rocker Arm Actuator System Stuck On 

tip for anyone seeing this and has this issue, make sure you replace it with the OEM Genuine Honda part, not even Dorman fixes it. Has to be OEM from Honda, you can get it more cheaply online than at dealer.

Thank you. This really explains how to diagnose and find the likely cause of the code. Mine has been showing and I just assumed cleaning would clear/fix the issue, but I’ll be more thorough when guiding my mechanic. 👍🏾

Theres also a vtc screen and a vvt solenoid with screens related to the same code that can be cleared out. oil pressure switch is about $100, valve spool assembly is about $520 and vvt solenoid is about $300 all from Acura and OEM. the part number for vvt solenoid O-ring is 15832RAA-A01 and is about 25$ for a measly O-ring. part number for vtc screen is 15845-RAA-A01 - costs about $9. hopefully i helped someone with this info.

Hey I just replace my valve cover gasket and I’m getting that code but does it has to misfire?

for anyone that had this issue, I had these codes come up and I did an oil change and everything went away even the check engine light, I drive a Honda pilot 2006 ex , the car has 198,000 miles. I’m starting to think instead of changing the oil every four or 5000. I’m gonna start doing it every 2500 to 3000 I just went over 3000 miles since my last oil change and this issue occurred, it’s very scary. VSA light will come on the check engine will come on and the car will not really accelerate so this happens first thing check oil or oil change.

I have a 2012 Honda Fit Racecar, (stripped) with the 1.5L Vtec. I had a P2649 code, Cyl 3&4 Misfire. I replaced coils, plugs, injectors, and ran fresh wires to the PCM from the Oil Pressure sensor and the VVT Solenoid. ( whole assembly). Car has less than 5 miles on the oil change. I have an oil light on and a Flashing CEL. and now P2647.

P2652 is the same code, but for the other sensor on the other side of the engine

Please help me I have a Saturn Vue 2005 the engine blew up so I swapped it with the 2007 Honda pilot engine since the Saturn vue also uses the same engine made by Honda and because the new engine’s VTEC system had only one connector I ended up using the old vtec system from the satun because it has two connectors now im getting the coode p2647 INT ROCKER ARM ACT SYSTEM STUCK ON NOTE THE SATURN CALLS IS ACT SYSTEM UNLIKE HINDA WHUCH ITS CALLED THE VTECH SYSTEM

Bro clutched up

Would this give you a VSA warning?

For what it's worth, I chased this problem forever. I had changed oil, checked all the screens, the spool valve, the actuator valve, etc...prior to this. Ended up being the wire was breaking off the main engine oil pressure switch, not the vtech pressure switch on the spool valve. Only way I found it was by chance when I decided to check the actual oil pressure with a gauge and was disconnecting it. I haven't found anything in the service manual or online in any forums etc that mention checking the main oil pressure sending switch. Also strange was that the oil pressure idiot light never came on. Maybe because it was just enough of an intermittent connection?

When i had this problem the solienoid was leaking just change the o-ring and clean all the oil use electic cleaner and let dry well

After replacing and clearing the engine light, after driving 1 km it engine light comes back on

I have changed the whole solenoid, new oil, new filter, and it’s showing up. When i disconnect the battery for couple minutes then nothing is happening as long as I don’t hit 8/9 k rpm. Anyone has an idea what is wrong? Car is civic fn2

Having this problem. Same code. Car won’t go past 3k rpm. Think it’s safe to drive to a few different shops for different quotes?

How does the car act when this switch acts up.

I like this thank you ..straight to the piont

Thank you for this video

If you’re getting this code and already replaced the VVT solenoid(on other Hondas It is the VTEC solenoid, but on a 2006 Honda pilot it is VVT solenoid.), what else would you think is the problem?

I drive a 2016 Toyota Corolla and checked engine light came on. I scanned it and the code came out p2647. Me and my friend couldn't figure out why this code only apply for Honda.

Thanks brother man !!

Says 02-05 si. I have a 08, I'm assuming it's the same thing for a 08?

OEM part number for the switch please? Thanks

Have a 2013 Honda Crosstour that just started doing this today, has 378,000 kms and this is the first hurdle we've had with it. Really shudders when idling and switching gears, just managed to make it home. Is it worth picking up these parts and trying or should we just take it to the Honda Dealer? With that many kilometers would it be worth having a mechanic look at it?

Priceeeeeee

What about non vtec p2646

U change the whole vtec solenoid and the code still pops up

Any fool make something simple sound complicated, it takes a genius to make something sound simple!-einstein

I replaced the part for p2647 cleared it comes back!!! Frustrated.. took it to a shop and checked it out still comes back.. it’s my daughters car….

Im about to attemp to replace the whole Spool. If that doesnt clear it, where would you go next?

HELLO MY FRIEND THANKS FOR THE VIDEO WHAT ABOUT AFTER YOU REPLACE THE PARTS IN TWO WEEK THE LIGTH IS ON AGAIN

I cleaned the screens, replaced the unit, and it threw 8 codes. It had been only throwing 2. I changed the oil and its doing good now. I just changed the oil a few months ago