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Discussion Starter #1
A few weeks ago the Service Engine Soon light came on and the car felt like I hit a wall under hard acceleration. I checked the code and P0014 came up. This indicated a possible problem with the camshaft position sensor on the driver's side. I pulled the sensors and swapped them with the ones on the passenger side and cleared the codes. I have driven about 500 km since and the light just came back with the P0014 code again. This rules out the actual sensors. I am leaning towards the VVT solenoid next, but thought I would check to see if anyone has experienced this issue.
 

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I finally got around to tackling this issue, and the replacement solenoids finally arrived. I decided to pull the outer cover to see if there was any sludge buildup or possibly something blocking one of the oil channels. You can see by the pics that other than a bit of oil varnish, things are pretty clean. While I had the cover off, I swapped the solenoids between the intake and exhaust ports. Once I put it back together, I still got a code, but it had switched from a P0014 (Exhaust Valve Timing Control Performance Bank 1) to P0011 (Intake Valve Timing Control Performance Bank 1). I then installed a new solenoid on intake side, cleared the codes and all seems fine now.
19889
19890
 

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I finally got around to tackling this issue, and the replacement solenoids finally arrived. I decided to pull the outer cover to see if there was any sludge buildup or possibly something blocking one of the oil channels. You can see by the pics that other than a bit of oil varnish, things are pretty clean. While I had the cover off, I swapped the solenoids between the intake and exhaust ports. Once I put it back together, I still got a code, but it had switched from a P0014 (Exhaust Valve Timing Control Performance Bank 1) to P0011 (Intake Valve Timing Control Performance Bank 1). I then installed a new solenoid on intake side, cleared the codes and all seems fine now. View attachment 19889 View attachment 19890
THANK YOU SO MUCH FOR THIS POST!!! Seriously, you have no idea how helpful this was to me, because I'm in the exact same position right now and I'm completely out of patience. I went to remove the solenoid from the outside on the driver's side and the freaking shaft is actually broken off, so I get to take the cover off like you did. I'm just hoping there won't be any metal flakes or anything stupid.

Do you have any tips or tricks on how to remove that cover more painlessly? And what kind of gasket did you use when putting it back on?
 

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Discussion Starter #4
Removing the cover is actually pretty straight forward. You will have to remove a few brackets and a few of the bolts are hard to see so you will have to remove those by feel. As for the stuck solenoid, there are a few suggestions on youtube, just google vvt solenoid broken in block.

I used Permatex Ultra Black gasket maker to seal it up. I have no leaks at all, and the FX50 have been running great.
 

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Removing the cover is actually pretty straight forward. You will have to remove a few brackets and a few of the bolts are hard to see so you will have to remove those by feel. As for the stuck solenoid, there are a few suggestions on youtube, just google vvt solenoid broken in block.

I used Permatex Ultra Black gasket maker to seal it up. I have no leaks at all, and the FX50 have been running great.
Yeah, I got the VTC cover off and I was able to get the broken piece out pretty easily, but now I'm worried about the RTV gasket. It's such a pain in the neck and I'm worried I won't make the proper seal and there will be a leak. I just wish they made normal rubber gaskets for these things.
 

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Discussion Starter #6
I had no problems using the RTV. Just make sure you put the cover on straight so you don't rub any of the sealant off. Infiniti just used a sealant, but they installed the covers with the engine outside of the car.
 

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I had no problems using the RTV. Just make sure you put the cover on straight so you don't rub any of the sealant off. Infiniti just used a sealant, but they installed the covers with the engine outside of the car.
How did you apply your RTV? Did you put it on the cover or the block? And did you follow any specific line? I wasn't really thinking when I took mine off and I removed most of the gasket by the time I realized that I should have taken note as to how it was applied.
 

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Discussion Starter #8
Just run a 1/4" bead around the cover in the middle of the mounting flange. I ran some around each bolt whole as well but you really don't need to. When you reinstall it, make sure that you lower it to the level where it sits then install it straight on so you don't rub the sealant off.
 

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Just run a 1/4" bead around the cover in the middle of the mounting flange. I ran some around each bolt whole as well but you really don't need to. When you reinstall it, make sure that you lower it to the level where it sits then install it straight on so you don't rub the sealant off.
Did you torque the bolts back in to any specific number?
 

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Discussion Starter #10
No, I just went by feel till I thought they were tight enough. I did follow the tightening pattern in the service manual (page EM-214)
 

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Hi Denis

I think I have the same/similar issue as yourself - FX50S 2012 - went into limp mode with Engine warning light on.
(Only able to drive at tick-over revs until codes were cleared.)
Checked codes and came up withy P0014 (twice!) Not sure if this is important but might be?
Had a quote from Nissan (Infiniti not in UK anymore) of £177 just to diagnose and £495 to change VVT solenoid.
Hence took it to my local garage to see what they could find - they were sure it was Camshaft Position Sensor so arranged for that to be changed. Collected car today and appeared fine until I tried to accelerate hard - at approx 3500rpm car hits 'flat' spot - no engine warning light though and still very driveable.
Checked codes and showing P0014 again but only once this time - thoughts on VVT sensor replacement or the other Camshaft sensor??

Cheers

Ian

PS Forgot to mention that car was serviced in March just before lockdown - hardly done any mileage since.
 

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Discussion Starter #12
To check the camshaft position sensor (CPS), just swap it with the one on the other engine bank, clear the code and go for a drive until the problem comes back. If the error changes to P0024 then you know it is the CPS. I suspect that it is likely the solenoid. It is fairly easy to change, unless it is stuck into the cover.
 

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Discussion Starter #13
Sorry, just reread your post. It cannot be the other CPS as that would throw a different code. The VVT solenoid is the next easiest item to get to. P0014 is bank 1 and has easy access. P0024 would be bank 2 and requires the alternator to be unbolted and moved out of the way. Unless you are really a stickler for genuine Infiniti/Nissan parts, check amazon or other online sources for better prices. If you are able to do it yourself, it can be done in about an hour in your driveway. You will need a 10 mm wrench and a screwdriver or two.
 

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Hi Denis

Thanks for getting back to me.
Yes I was assuming that it was probably the VVT sensor now and maybe was also that in the first place (as I had two P0014 error codes).
I'll check with my garage again in the morning to see how much they are from Nissan.
I'm assuming Bank 1 is the LHS if viewed from the front of the car?
I've found some parts on US website (Rock Auto) and they have part nos for left and right VVT sensors??
I see you had to modify yours slightly - which did you buy?
Thanks again Ian
 

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Discussion Starter #15
Bank 1 is the right side looking from the front of the car. For a right hand drive car it would be the passenger side. There are two solenoids on each side. The exhaust solenoid is the outside one on each bank (the one furthest from the centre of the engine). I was planning to buy from Rockauto but I am a bit frugal when it comes to cars, so I went to the local auto recycler and pulled a few solenoids off of whatever infiniti or nissan they had. I got one from a G35, M35, and Nissan truck. How they mount is a bit different, but the solenoid itself is the same. If my problem comes back, I will probably buy from rockauto.
 

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Ah right - thanks for clarifying which side - looking at some posts I assumed that it was US passenger side!
Will let you know how I get on, cheers Ian
 
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