Code P-0661 Intake Manifold Tuning Valve Control Low Bank 1a
#1
Grey Boy
Thread Starter
Code P-0661 Intake Manifold Tuning Valve Control Low Bank 1a
This is not common because most 8’s had a recall fix for the milky residue on the oil dipstick that replaced these solenoids already and it appears that the replacement ones are of better quality. I have read the sticky and all the other posts that come up when you search regarding the RX-8 code p0661, which will give you a CEL. None of them gave me direction and location enough to fix it myself. That’s not to say their not out there, just that I didn’t find them. So I am writing this as a way to help the next guy and spare them the hassle and BS I dealt with.
Code ‘P-0661 Intake Manifold Tuning Valve Control Low’ will usually have a 'Bank 1a' or something after it. I was originally informed that ‘Bank 1a’ referrers to the #1 rotor. Later in this thread I learned that is not true so I have edited this first post with the updated info. P0661 refers to the solenoids, but they are not rotor specific. the banks are solenoid specific. One is for your SSV, one is for your VDI, and one is for your air pump. It will make a difference in the part you work on since there are three of solenoids, all right next to each other. The code is for a valve solenoids on the intake manifold. They are not easy to get to but if you are mechanically inclined then you should have no problem. You will need to disconnect the throttle body and remove the extension manifold. This will give you access to the three valve solenoids.
From what I have learned it's a dealer item (KL01-18-741) and cost about $100. If you can find it cheaper post it here for others. The three solenoids are color coated Blue, White and Black. The mechanic at my dealer stated that the valve solenoid that corresponds with ‘P-0661 Intake Manifold Tuning Valve Control Low Bank 1a’ is the White one. But he is also the one who told me that the banks were rotor specific so don’t take anything for granted. I hope this helps
Code ‘P-0661 Intake Manifold Tuning Valve Control Low’ will usually have a 'Bank 1a' or something after it. I was originally informed that ‘Bank 1a’ referrers to the #1 rotor. Later in this thread I learned that is not true so I have edited this first post with the updated info. P0661 refers to the solenoids, but they are not rotor specific. the banks are solenoid specific. One is for your SSV, one is for your VDI, and one is for your air pump. It will make a difference in the part you work on since there are three of solenoids, all right next to each other. The code is for a valve solenoids on the intake manifold. They are not easy to get to but if you are mechanically inclined then you should have no problem. You will need to disconnect the throttle body and remove the extension manifold. This will give you access to the three valve solenoids.
From what I have learned it's a dealer item (KL01-18-741) and cost about $100. If you can find it cheaper post it here for others. The three solenoids are color coated Blue, White and Black. The mechanic at my dealer stated that the valve solenoid that corresponds with ‘P-0661 Intake Manifold Tuning Valve Control Low Bank 1a’ is the White one. But he is also the one who told me that the banks were rotor specific so don’t take anything for granted. I hope this helps
Last edited by titaneum_grey; 04-15-2013 at 12:39 PM. Reason: new information
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Silverhorn (09-16-2022)
#2
Aging Cold Warrior
Your timing is perfect! I've been trying to track down what this meant and although I saw other threads discussing CEL issues; Yours is the first post I've found that dealt directly with this particular issue.
Manythanks!
BTW: Here's a link to a PDF Shop Manual that illustrates the location of said valves relative to the intake. Between this and the information you posted; It should be easier to keep the service manager honest .( a forlorn hope at best but who knows?)
http://www.mazdarx8.org/wp-content/u...ine-Manual.pdf
Manythanks!
BTW: Here's a link to a PDF Shop Manual that illustrates the location of said valves relative to the intake. Between this and the information you posted; It should be easier to keep the service manager honest .( a forlorn hope at best but who knows?)
http://www.mazdarx8.org/wp-content/u...ine-Manual.pdf
Last edited by O_Bollox; 10-27-2012 at 06:27 PM. Reason: Addition of PDF Shop Manual link
#3
Grey Boy
Thread Starter
bla bla bla bla blab.....
Last edited by titaneum_grey; 10-27-2012 at 02:58 PM.
#4
Grey Boy
Thread Starter
Your timing is perfect! I've been trying to track down what this meant and although I saw other threads discussing CEL issues; Yours is the first post I've found that dealt directly with this particular issue.
Manythanks!
BTW: Here's a link to a PDF Shop Manual that illustrates the location of said valves relative to the intake. Between this and the information you posted; It should be easier to keep the service manager honest .( a forlorn hope at best but who knows?)
http://www.mazdarx8.org/wp-content/u...ine-Manual.pdf
Manythanks!
BTW: Here's a link to a PDF Shop Manual that illustrates the location of said valves relative to the intake. Between this and the information you posted; It should be easier to keep the service manager honest .( a forlorn hope at best but who knows?)
http://www.mazdarx8.org/wp-content/u...ine-Manual.pdf
Just a little something to think about,,, since the solenoid is hooked up to a vacuum line it would be prudent to check the line for any crack or breakage and to also check the electrical connections as well before purchasing one and replacing it.
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jo2901 (10-25-2020)
#6
Aging Cold Warrior
Although I found nothing. That doesn't preclude the possibility that I've missed it. Potential causes remain: 1). Vacuum leak, 2). Bad electrical connection , 3). Bad Actuator, & 4). Bad Solenoid.
Intuitively speaking , the 'low voltage' code implies problems of an electrical nature.
But, I can still use this info to try and keep the Service Advisor honest.
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Silverhorn (09-16-2022)
#7
Grey Boy
Thread Starter
Thanks again. I've already traced the vacuum lines and electrical connections to the farthest extent possible short of dis-assembly ( currently living in a downtown hi-rise condo with sufficient underground parking to accommodate 1 car & 1 motorcycle ; I already get disapproving looks whilst cleaning the cold-air intake filter at the wash rack).
Although I found nothing. That doesn't preclude the possibility that I've missed it. Potential causes remain: 1). Vacuum leak, 2). Bad electrical connection , 3). Bad Actuator, & 4). Bad Solenoid.
Intuitively speaking , the 'low voltage' code implies problems of an electrical nature.
But, I can still use this info to try and keep the Service Advisor honest.
Although I found nothing. That doesn't preclude the possibility that I've missed it. Potential causes remain: 1). Vacuum leak, 2). Bad electrical connection , 3). Bad Actuator, & 4). Bad Solenoid.
Intuitively speaking , the 'low voltage' code implies problems of an electrical nature.
But, I can still use this info to try and keep the Service Advisor honest.
#8
Driving my unreliable rx8
I am just getting this code for the first time. After reading a few posts I am thinking a little in the vacuume line might help. If the valve is sticking and functioning part time that will suck it through the valve. Any thoughts on this? I don't imagine a few drops of triflow could hurt.
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Silverhorn (09-16-2022)
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Silverhorn (09-16-2022)
#12
Aging Cold Warrior
Damn, $300 for parts and labor? I paid $40 for mine and even made the DIY to removing the UIM.
In any case , I was able to use Titanium Grey's info to reduce the cost from $475-600+ ( from the DIY thread) to $300.
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Silverhorn (09-16-2022)
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Silverhorn (09-16-2022)
#14
Grey Boy
Thread Starter
Grace Excel.
Thanks for the help. Hope I can return it sometime.
I read your post and although the code was different I'm wondering if the part you needed was the same? And, if you can you let us know how you got your part for $40, My dealer wants way more.
Seems like my CEL is back and I will have to do more then just rescuing connections and lines. your post helps.
Thanks for the help. Hope I can return it sometime.
I read your post and although the code was different I'm wondering if the part you needed was the same? And, if you can you let us know how you got your part for $40, My dealer wants way more.
Seems like my CEL is back and I will have to do more then just rescuing connections and lines. your post helps.
#15
Grey Boy
Thread Starter
My code reader is generic, but my dealer’s is not. Sill, thanks for that little tid bit.
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Silverhorn (09-16-2022)
#16
Grace Excel.
Thanks for the help. Hope I can return it sometime.
I read your post and although the code was different I'm wondering if the part you needed was the same? And, if you can you let us know how you got your part for $40, My dealer wants way more.
Seems like my CEL is back and I will have to do more then just rescuing connections and lines. your post helps.
Thanks for the help. Hope I can return it sometime.
I read your post and although the code was different I'm wondering if the part you needed was the same? And, if you can you let us know how you got your part for $40, My dealer wants way more.
Seems like my CEL is back and I will have to do more then just rescuing connections and lines. your post helps.
DTC P0661: SSV solenoid valve control circuit low
The PCM monitors the SSV solenoid valve control voltage when the PCM turns the SSV solenoid valve off. If the control voltage is less than 5.8 V, the PCM determines that the SSV solenoid valve control circuit voltage is low.
since the PCM grounds the solenoid, this means that for some reason that the PCM is not seeing power FROM the solenoid. its a fancy way of saying there is a problem in that circuit. its either a bad SSV solenoid, connection, or wire to or from the solenoid.
#17
Grey Boy
Thread Starter
from the shop manual;
DTC P0661: SSV solenoid valve control circuit low
The PCM monitors the SSV solenoid valve control voltage when the PCM turns the SSV solenoid valve off. If the control voltage is less than 5.8 V, the PCM determines that the SSV solenoid valve control circuit voltage is low.
since the PCM grounds the solenoid, this means that for some reason that the PCM is not seeing power FROM the solenoid. its a fancy way of saying there is a problem in that circuit. its either a bad SSV solenoid, connection, or wire to or from the solenoid.
DTC P0661: SSV solenoid valve control circuit low
The PCM monitors the SSV solenoid valve control voltage when the PCM turns the SSV solenoid valve off. If the control voltage is less than 5.8 V, the PCM determines that the SSV solenoid valve control circuit voltage is low.
since the PCM grounds the solenoid, this means that for some reason that the PCM is not seeing power FROM the solenoid. its a fancy way of saying there is a problem in that circuit. its either a bad SSV solenoid, connection, or wire to or from the solenoid.
it will save people from going over unneeded areas.
is the shop manual posted here or anywhere that you know of.
Angelo
#18
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Every Mazda I've owned in the past 5 years has had a p0660, which is closely related to this. I've yet to find out what the problem is on the other cars. It will not illuminate the MIL, but it's always there. It's annoying just knowing it's there. I'm an ASE certified tech and have yet to find an actual problem. I haven't actually checked the DTCs with anything other than a code reader, but if I do and I retrieve this code, I'll be pissed because I'll start spending a ton of time looking for a solution.
#21
Grey Boy
Thread Starter
My dealer tech told me the banks (1+2) repersented the rotors.
And has been who I have checked everything with, I have found thus far.
Up till now I had no reason to question him.
I will have him put my 8 on his mazda scanner before going any further.
and I will look into getting the proper scanner for myself.
thanks for the info.
Last edited by titaneum_grey; 12-30-2012 at 10:24 AM.
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Silverhorn (09-16-2022)
#22
Grey Boy
Thread Starter
Last updated: May 23rd 2012
Minor tweaks on 9/2/2012
The best way to search this forum:
We have a Search button, and a Search function for the board, but it isn't very good. It removes words that it sees as common or too short, but are a critical part of the search. It doesn't allow for search by relevancy, as in real relevancy. You mostly have to do alot of hunting and pecking in the search results to come up with what you might be looking for.
Add the two above issues together, and you can easily take all day to find only bad information.
But I have good news! You can improve your results and search speed by up to 15% by switching to Google!
As in Google.com.
Go to Google.com, and in the search box, type: site:rx8club.com
Then a space.
Then start typing what you are looking for.
Like this:
RX8Club.com search via Google
Your Google search results will be ONLY from this forum, and it will use all the power and intelligence of the best search engine in the world.
Minor tweaks on 9/2/2012
The best way to search this forum:
We have a Search button, and a Search function for the board, but it isn't very good. It removes words that it sees as common or too short, but are a critical part of the search. It doesn't allow for search by relevancy, as in real relevancy. You mostly have to do alot of hunting and pecking in the search results to come up with what you might be looking for.
Add the two above issues together, and you can easily take all day to find only bad information.
But I have good news! You can improve your results and search speed by up to 15% by switching to Google!
As in Google.com.
Go to Google.com, and in the search box, type: site:rx8club.com
Then a space.
Then start typing what you are looking for.
Like this:
RX8Club.com search via Google
Your Google search results will be ONLY from this forum, and it will use all the power and intelligence of the best search engine in the world.
Last edited by titaneum_grey; 12-30-2012 at 11:06 AM.
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Silverhorn (09-16-2022)
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Nuke It (11-26-2018),
Silverhorn (09-16-2022)
#24
Grey Boy
Thread Starter
Mazda tried to to get me for an air pump for $869. When I called them out and said I wasn't getting an air pump code they said you can't go by the code. Go figure, I thought the CEL code showed exactly where you should be looking. Anyway, I went to my rotary mechanic and he ended up checking all sensors, replacing the solenoid, and cleaning the engine for around $400. hasn't thrown a cel since.
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jamezmazda (01-04-2020)
#25
Grey Boy
Thread Starter
I have the new solenoid but have yet to put it in because I am not having any issues with performance, except for the CEL. my 8 still runs the way it always has. I am not getting any power loss, rough idling or flooding issues. Since I found the better way to search I have gone from finding 3 threads on the subject to 25 threads. at first I thought I was bound to find a definitive answer in one of them. what I have found is that most threads end when people find there fix but they seldom log back in to let people know if they work. I have checked all my connections and yet my code keeps clearing itself for a few days and then comes back. I'm thinking it could be a chafed or partially cut wire in the harness. as long as my 8 is still running fine I will wait till I have warmer weather to start taking it apart. I will post what ever I find
Last edited by titaneum_grey; 01-12-2013 at 08:25 AM. Reason: grammar