Solving Honda P2646 Part 2: How To Replace VTEC Solenoid Spool Valve Oil Pressure Switch & Gasket
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- เผยแพร่เมื่อ 21 ส.ค. 2024
- This is basically Part 2 in a conquest to solve P2646 for my brother's Honda Accord. P2646, which is an OBD-II generic code for the engine control module (ECM) detecting the 'A' rocker arm actuator control circuit for bank 1 has a performance problem or is stuck in the off position.
My brother's Honda developed acceleration problem (choppy, shuddering, stumbling & loss of power) while driving and the engine light on the dash board came on. When checking the error code using OBD-2 diagnostic tool, it displayed P2646.
Parts you might need & links to buy:
1. 15815-RAA-A01 - Solenoid Gasket Spool Valve Filter Screen | amzn.to/2RsLWjW
2. 15845-RAA-A01 - VTC Filter / Gasket Assembly | amzn.to/2GRU1fJ
3. 15810-RAA-A03 VTEC Solenoid Spool Valve w/Timing Oil Pressure Switch & Gasket (Replace # 15810-PNE-G01 15810-PPA-A01 15810-RAA-A01) | amzn.to/2Fm9HI0
In this video, we removed the VTEC Solenoid Spool Assembly in order to replace the gasket/strainer. We could've changed the entire assembly, but we're a little bit weary about the durability of the aftermarket parts. Besides we didn't think the solenoid or the oil pressure switch are the culprits. Please watch other parts below:
Part 1: • I Got Code P2646: What... (What Does It Mean? Symptoms, Causes, How To Solve)
Part 2: • Solving Honda P2646 Pa... (How To Replace The VTEC Solenoid Spool Valve Assembly, Oil Pressure Switch, Gasket)
Part 3: • Solving Honda P2646 Pa... (How To Remove The VTC Gasket / Strainer)
Part 4: • Solving Honda P2646 Pa... (How To Re-Install The VTC Screen)
Part 5: • SOLVED! P2646 CODE: Ho... (Full-Length Video How To Remove & Install VTC Filter)
Part 6: How to fix common Oil Leaks for Honda
What causes the P2646 code or what triggers it?
The ECM detects a problem in the rocker arm system for bank 1.
The oil passages are clogged or the oil pressure is not up to specifications.
The rocker arm actuator is clogged with sludge or is sticking intermittently.
The engine may have excessive sludge binding the rockers from moving or the oil is too thick.
The incorrect oil viscosity is being used.
Engine oil level is too low, PCM failure, sensor failure & wiring issue
What are other symptoms of the P2646 code?
The engine valve train will not move as designed causing a low power condition.
The Check Engine Light will be illuminated.
The valve train may be excessively noisy if one or more rockers are stuck in the incorrect position.
Based on our research and inspecting my brother's Honda Accord, we concluded that there must have been an oil leak and/or sludge blocking the flow of oil inside the engine. We didn't want to think that we should remove and replace the rocker arm, or even the oil pressure switch and the solenoid. There must be something simpler and easier to fix.
The first thing we wanted to do was to clean the engine using SeaFoam. Sea Foam is specially formulated to safely and slowly re-liquify gum, sludge, varnish and carbon deposits from the hard parts in your engine so they can be flushed out of the system.
Afterwards, we planned to drain and change the oil and the filter, followed by replacing the gasket / strainer for the VTEC Spool Valve in the back of the engine. We would also replaced the front VTC strainer. Many people recommended replacing the entire Spool Valve Assembly which consists of the Timing Oil Pressure Switch, Gasket with strainer and the heat shield, but genuine OEM too expensive, so we'll keep the old one.
Apparently Code P2646 is fairly common for Honda sedan cars and SUVs such as Accord, Civic, CRV, CRZ, Element, Fit and Acura RSX, especially 7th and 8th generations model years such as model years 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 & 2012.
What does a rocker arm actuator do?
The rocker arm actuator is an oil pressure switch which controls the flow of oil to critical upper engine cylinder head components. The Rocker Arm Control Solenoid supplies hydraulic pressure to the Variable Timing mechanism. This allows the VTC System to adjust valve timing as needed. The engine's control module (PCM) uses the Rocker Arm Oil Pressure Switch to verify correct oil pressure for proper activation of the Variable Timing mechanism. If the PCM does not see the correct voltage signal back from the Rocker Arm Oil Pressure switch, the PCM will set code P2646.
Be sure to watch our other DIY auto repair videos, diagnostic ideas, and how-to fix them on EyeOnAiman's youtube channel and facebook page.
You can watch all of Aiman's auto repair videos in the following playlist: • How To Remove Alternat...
Note: This video is NOT sponsored. Some product links are affiliate links which means if you buy something we'll receive a small commission. As an Amazon Associate we earn from qualifying purchases.
Recording Date: January 11, 2020
Video URL: • Solving Honda P2646 Pa...
Here are the links to buy the PARTS you will have to replace & the TOOLS showcased in the video which you might need in order to diagnose & solve Code P2646:
1. amzn.to/2Fm9HI0 | Genuine Honda 15810-RAA-A03 Spool Valve Assembly
2. amzn.to/3hyadzA | Genuine Honda 15845-RAA-A01 Vtc Filter Assembly
3. amzn.to/3c3xqbB | Honda Genuine Filter, Spool Valve
4. amzn.to/3iw1MWR | Honda Genuine (37240-R70-A04) Oil Pressure Switch Assembly
5. amzn.to/2E4MERe | Actron CP9550 PocketScan Plus
6. amzn.to/2Fy3Hf3 | Sea Foam SF-16 Motor Treatment - 16 oz.
7. amzn.to/35xkRnQ | GEARWRENCH 20 Pc. Ratcheting Wrench Set, SAE/Metric - 35720
8. amzn.to/35BfFPH | Milwaukee 2457-20 M12 Cordless 3/8" Lithium-Ion Ratchet (Bare Tool)
9. amzn.to/33xbgKS | EPAUTO 45 Pieces 3/8" Drive Socket Set with 72-Tooth Pear Head Ratchet
Are these parts for the 05 acura TL also?
Helpful hint remove the passenger front tire and remove the access panel that is built into the inner fender well and you can get to the vetch much easier than laying across your engine.
Im going to be replacing my timing chain tomorrow and the vtec gasket and oil pressure switch and God knows what else. My patience is gone from waiting on the timing chain. I have watched You Tube over and over. I think i can do it but not without some bad words😂. I know Me very well. Thank God for your Posts and everyone else too. And everyones Comments.
You’re an old stool mechanic. Working on cars no matter what the weather is.
Just completed this and wooohoooo! Vtec works. Perfect solution! Paid 600 bucks for a clean low mile. 06 Element that wouldn't stay at 65. I just floated down the Hwy at 80...no problem. Along with a new tensioner and window regulator im at $735 total investment. Thanks so much!
A spare Accord in the yard, always comes in handy. 😄
Crazy how you did a solenoid video yesterday, when I just ordered the gasket for it. And needed a video on how to do it. Hahaa perfect timing 💯
Thank you, fixed this using your help. Loved how you lay over the engine. Followed that technique
You can open the hood even more by putting the rod on the lower slot at the end of the hood as opposed to the slot where you have it in this video, this way you don't bang your head on the rod.
Great video! Will replace mines tomorrow
Just replaced the whole unit of VTEC Solenoid. Here's Honda OEM Part#15810-RAA-A03 for $184.77. Took me one and half hour.
Did it solve your problem? Mines is leaking
how the car running when you replaced it ?
You the best videos on accords lad you will be a great mechanic
Did this ultimately solve the problem? I've seen many people replace just the oil pressure solenoid and it solved the code and the 3000rpm limiting acceleration. Thanks.
Loved the details ! Thanks man. I have this accord and I need to do 170k maintenance
You make great videos, thank you!
Thank you sir , did as what you demonstrated and 👍
Much needed video thank you...Hey bro ware did you order the parts from
5:46 he hits his head reallllll good. Replayed it about 15 times. Take a little gander at 13:20 too. Poor head of his- Great video though!
You are really pretty what’s your Instagram
After market or OEM for better life span?
oem always
Idk, but I like you guys 😎💯
Nice job. Thank you.
Switched it out w a old one but code came back on after a drive along w P0302 with misfiring in no2 cylinder any help ?
Same smh
Amazing! So helpful
Amazing video bro love it you explain everything ok detail a bit faster would be nice though. Over all amazing detail to explanation
Thank you thank you very much amigo
Will a lot of oil drain out when take off that assembly?
Just a little bit, be careful if u are under the car
great job thanks
We did this and unit started no issue...we let it sit 24hr and was shocked it wouldn't start only turn over...we remover the new solenoid and when back to old that scan OBD code 2646, nothing STILL, just turns over NO start? any advice?? Thanks Kim
This new symptom is likely unrelated to the valve. You may have accidentally removed a wire or two that involves ignition. Check all wires on this unit, nearby, andy involving your battery, clean and tight electrical connections.
I have a friend who has that same problem with his Acura and someone told him to beat the top of his steering column a few times. He did and it started.😂 Makes no sense to me either
I have a 2006 honda pilot fwd , I recently disconected my positive battery terminal to clean off some carostion , when I recconected it my ac now blows warm air , it was working fine before I did this . do you have an idea about this .
is this the cause of my car stalling ,my car stalls after driving for a bit after stalling i turn off the car and turn it back on and runs again until it stalls usually lasts like 6-10 mins
you figured the problem ?
Are the bolts holding the back selonoid reverse Threads beacuse I am using the old lefty loosy and righty tidy method and can get them loose
Can you show how to remove the dashboard
👍👍👍
Once upon a time I too could fit on top my Ford engine. Not sure I or my Honda would enjoy it.
Correct food choices chews ing
My honda leaks oil...i have a vtec can it be from the solenoid? But i hardly drive it in vtec
Hey the information is good thanks. I think you will need hair cut next year 🙈
My rsx doesn't have a check engine light but it doesn't rev past 5 rpms. So I'm guessing it's on limp mode. Douse any one out there know what the problem could be.
Check your oil level bro. Happened to me couple days ago was limping after 4K rpms. Check oil level first. If not, then start looking for the leak near the VTEC Solenoid.
I bought an 08 Accord that supposedly had a bad transmission but i Googled the problem and the guy said there is a relay under the hood and i opened the fuse box and the top was gone off of it so i replaced it and i got a great car for 200 dollars.
Oh my Accord wouldn't Rev up either so the relay was the problem.
I’m having an oil leak on my passenger side in the rear of the engine it’s leaving a couple drops of oil all over my drive way do you think the vtec is my problem?
There are many possible causes for an oil leak. If you're familiar with cars, I suggest you try to look around the web for possible causes and investigate the cause yourself. Since I probably won't be able to provide specific guidance on this, I suggest that you bring your car to a mechanic to check, since it's better to be safe than sorry. Cheers!
I've changed mind multiple times and also change out the unit. And I'm still leaking
The screener doesn’t come on the solenoid?
What if I’m still having the same code? P2646
was the car making a ticking type sound? before you did all this ??
did you ever find out ?
I replaced the whole Valve, oil and front screen , still same issue. Any idea ?
English flush is the last bet
Need help with my honda.. the vsa light Will light up after drivit it and it wont let me rev it pass 3000
ever find a solution? im having same problems
Thank you for this video
Hello,
Would a faulty spool valve give misfires? I have new spark plugs, moved the coils to the cylinder indicating an issue, and the misfire still on that cylinder. Removed the side solenoid, and cleaned it. Verified it was working. Fuel injectors all 4 make it almost stall when removing one at a time. Same with ignition coils one at a time. It has a flashing check engine light and it shakes pretty bad at 35mph+. Thanks
Your coil needs to be replaced
@@SoSlow252
Actually it was indeed the vtec gasket. It was clogged .
@@gloglo1275 at least yours was a simple fix. I just took mines off and mine is pretty clean. Gonna see if the piston in the solenoid actually moves. I'm thinking the vtc actuator took a shit
@@SoSlow252
Man I checked everything and I couldn’t figure it out and it wasn’t until I decided to take get my wife another car that they mechanic at the dealership told me oh year we had an issue and check the rear vtec module and sure enough. $8 fix!!!!
@@gloglo1275 damnnnn lmao. I'm gonna try my luck with the vtc actuator and see if it fixes the issue..
It would be helpful if you showed us how to pull the clips out rather then say “it’s already done”
What year is it
No honda bond or gasket maker
@aiman can you please text the gas get part number thank you
Your camera moving so fast, that mean not easy to know you show
Good point! Never buy Solenoid products from Amazon.. They're all complete shit and a waste of time. Go to a major auto parts retailer or buy a genuine part from Ebay or any other trusted online seller
Honda will only take OEM solenoid.
wait you don't know what your doing but telling us how to do it. okay next video I go.
You're not good at making video bro
but you have good knowledge and English