How to Fix a Honda P2646 Code: ‘A’ Rocker Arm Actuator System Performance / Stuck Off Bank 1
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- čas přidán 4. 09. 2024
- Definition Meaning and Fixes for a Honda P2646 engine Diagnostic Trouble Code: ‘A’ Rocker Arm Actuator System Performance / Stuck Off Bank 1
"Rocker Arm Oil Pressure Switch Circuit Low Voltage"
Causes of a Honda P2646 Code:
Low or Dirty Oil
Wiring
Bad VTEC Valve Timing Solenoid
Rocker Oil Pressure Switch
Thank you for this video. My 2017 pilot threw the emission and transmission faults. I didn't record the exact codes, but the same rocker arm actuator fault came back immediately after attempting obd2 clear and battery ecu reset.
Almost had it towed, but went back with what I needed to change oil and rear oil pressure switch.
Checked oil and verified it was quite dirty, even though the oil life indicator displayed 70%.
Luckily it was in a parking lot and I changed it on site; also removed negative to reset ecu again. Vehicle started without issue, tested around lot waiting for a misfire or hesitation. Didn't feel any, hopped on highway, 20 miles, no issue. Scary now that slightly dirty oil will strand these vehicles.
I've had this problem for 9 Months. Ever since running through some deep water that was flowing across the Road after Dark. I have an 07 EX-L Accord Coupe, 2.4 Automatic, and I've replaced the Entire VTEC Valve with the Oil Pressure Switch & Screen, the Actual Oil Pressure Switch mounted to the Block Below the VTEC Valve. Also Replaced the VTEC Solenoid and Screen on the Pully Side of the Engine and Changed the Oil & Filter. And it's Still throwing the P2646 Code when Moisture is introduced to the equation.
Have you had any more luck.
I've had my engine replaced in my CR-V ( for a different issue ) I replaced my VTEC solanoid too, spark plugs.
Did the rocker cover for a different issue but I still get this code my oil is clean.
Running out of ideas the car drives fine.
I've been told that tightening the VTEC solanoid too tight can cause this code unsure how true this is.
Might check mine again on the weekend but same issue as you.
I was driving it the other day fine but today it came on again after about 2 minutes of driving.
Before I got my engine replaced I had the same error code it just came on randomly while I was driving home.
The only thing I did different tonight was drain my oil and put a bit less in as I over filled it but it's still between the lines when I checked the oil. So I'm not sure.
I'll repost after this weekend again but I do think it's something to do with moisture like you said.
@fluffycat6489 On Your CRV, are the Windshield Washer Nozzles mounted On the Hood? I've seen One Video in my search, that showed where Moisture/Water leaks around the Washer Nozzles (From as little water as Dew forming on the Hood) the water drips down and is getting in the Connectors that plug into the VTEC Valve and Oil Pressure Switch on the Back of the Engine. The water gets into the Connector where the Wires go into the Connector causing it to Corrode, or even just Short The Connection. Their Soulution was to first, seal the area where the Washer Nozzle goes through the Hood, then to Clean the Connectors using Electronic Parts Cleaner, then Seal the Connectors where the Wires go into them with a High Temp RTV Sealer. Lastly Use Dielectric Grease inside the Connector to keep moisture out. I haven't done this to the Connectors on My Accord yet, but After Driving enough to Heat Everything Up to Dry Everything Out, after the last time Water was involved to Degrease the Engine, the Code Cleared. On My Accord the Washer Nozzles aren't mounted through the Hood though, they're mounted in the Plastic Cowling at the Base of the Windshield.
Gracias for the overview of it. I have a 2.4L and keep cleaning the vvt solenoid even though its a rocker arm code. Im gonna go hunting for those screens and the solenoid in it Thanks again
PS i have been changing oil, not filter, every 1500 Miles
Did the solenoid, did the other one on upper side of block and calibrated the valves, and did oil pressure switch, always keep up with oil changes not sure why issue persists
My car randomly started shaking violently every time I would stop and then the car would die, got back home and found out the rocker arm was bad, I’m pissed because it was working fine the day before with no signs anything was wrong
Literally happening to me rn
How did you fix it
bucking is part of the problem i had i put a new from O O O Rileys and ended up buying a different one ??? and allso there is a oil pasage in the rocker assambely im told that gets plugged ??? dont know i dident fix it this time but the guys in Vermont are good with these
Installed a new genuine vtec assembly, oem screens for the side solenoid and front strainer gaskets, and cleaned the solenoid. Still get 2646. Down to possible wiring issue. Bought new pigtails for all three connectors. How do I know if it’s bad wiring?
Very helpful . Thanks .
Bro thank you I’m a out to go crazy with this damn code I’m about to do all of this and come back and let you know how things went
well tell me dude.
Update???
tell me please
i don’t think it was good….
My car ended up having an oil leak so I just had to fix that and put more oil in. Essentially the code was caused by low oil.
Could this cause my car to turn off? I was driving and my car shut off and I can't get it to crank now😊
I'm working on my son's 04 Civic Ex. I'm trying to locate all of the screens and solenoids that could cause the P2646 code. I've tested that the connector to the spool valve had voltage, then replaced the spool valve. I replaced the rear oil pressure switch as well. Yesterday, I did an engine flush and would like to clean any other screens before the car is used. Could you tell me the location of said screens and solenoids?
How do you clear the code? Entire assembly and screens replaced. My cheap reader can't seem to clear the error.
Cheap readers should be able to clear the code. Mine does.
@drbyers I just learned. Depends on year. 2009 or older, it's a permanent code that you have to do a drive cycle to clear. Newer stuff, you can clear the error
@@gearheadgregwi mines a 2005 and I just cleared mine this morning.
What do you mean drive cycle@@gearheadgregwi
@efernandez10251984 engine computer waits for certain rpm's, etc. Usually, about a week of monitoring and computer clears the error.
I have a 2005 Honda Element EX and it is randomly stuttering, does not happen all the time, I took to get it scanned and the computer threw a P2646 code, they say to replace the VVT pressure switch.
there is one more problem asocieated with this problem suposidly there is a wireing harnis and one of the pins gets caroted thats what im told shortly after fixing that i had a nother code knox sencer in the front behind the exhaust manifold, all so watch your oil if it gets dirty and im sure it will but dirty oil lack of oil changes dose not help this problem i would use the best oil you can get for this Vtex engine. if you have a miss fire on one of these engines you will loos a lot of power these engines are not power houses
Would it have multiple cylinder misfires as a symptom??? Only code im getting along with misfire on 1,2,4(4cylinder)
Just took my ‘05 Element in after getting some occasional sputter / misfires. 2646 was the code my mechanic said out loud. I’m hoping I don’t have to spend more than $400
any update?
$300 cash instead of $362 retail / charge. Bro discount. 😊
@@alive1945what part did he replace ?
@@plutodread97 37250-PNE-GO1 plus O ring. Has run as new since.
i have 05 4 cyl honda ellement . i replaced the Vtec asambly but check engine lights went out but back on car is BUCKING will not shift through the gears when excellarating so my teck guy is coming up with cods like oil pasage pluged,Vtec,exc, he has checked grounds and power to it .. he all so tryed to by pass it he said it should the engine should flutter but its not doing that ..??? so he is thinking it is in the valve cover rocker oil pasage ??? is this possable and what ells could it be .. backing up we bought the car and i noticed it was down a Qt of oil so not thinking i added a Qt of 5-30 or 10-30 i know it was not 5-20 so i drove the car got the corect oil and changed it with a fram oil filter and 5-20 castro synthitic iv been having this bucking problem since thank you for any help
Similar problem with my 07 Element, light just came on this morning bucking hard when seemingly trying to change gears. Around 55mph going up, as if from 3rd to 4th gear. Always kept on top of oil, Pennzoil High Mileage Synthetic and WIX XP Filters (recommended by Honda) and had this baby since '19!
i dident fix mine i had a friend fix it he said he took the rocker cover off an flushed out the rocker shaft i dont know if he did or not but we have a couple thousand mi on it it runs 100% better then the light cam back on and it was crank posion sencer couldent tell in porfinces with the bad crank sencer ... but same guy fixed it again this thing runsss like a top never ran this good when i got it so check this out
I've been having problems with my element as well. P2646 code came up and car buckles. I already replaced the VTEC solenoid and it had been pretty good with the oil change. A week later it shoots out the code again. Should I also change the VSS solenoid too.
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This video is outdated if you have a 2006 Pilot with the J35Z1 V6 engine. This engine will have an oil pressure sensor which contains a potentiometer, and, therefore will have 3 pins in the connector. This is NOT a switch. If you go to the parts house, and they want you to prepay for them to order it, be aware that what arrives may not be correct. Make them show you the specs and photo before you order, if possible. And verify that it has 3 pins. The J35A9 engine WILL have a switch, with just 2 pins in the connector.