CVT fill plug pops out, plugged vent?

34881 Views 44 Replies 24 Participants Last post by jasper60103, 9 d ago

bushlander

Discussion Starter · Mar 5, 2019

So I did an oil change yesterday and I noticed my fill plug was on top of the CVT... Kinda scared so I got some HCF-2 to change it out today and it has popped out again after 100 miles?

I've searched and found a few people that mentioned the same issue but no solution.

Anyone have some insight?

1 - 20 of 45 Posts

MrRangerZr1

· #2 · Mar 5, 2019

Common problem. Just get a new plug from the dealer.

Coastie05

· #3 · Mar 6, 2019

MrRangerZr1 said:
Common problem. Just get a new plug from the dealer.

They get loose or what?

fear24

· #4 · Mar 6, 2019 (Edited)

mine popped out...it was on the garage floor. i didn't realize what it was....held on to it for a bit. finally, gave up, threw it out. 2 weeks ago, i was making sure they changed the brake fluid as i paid for that as well as the tire rotation and such. next thing on the my list to do was change the transmission fluid, so i looked down there and no plug. i was like, wtf! i immediately thought the dealer had forgotten to put it back on when they did the comprehensive multiple point inspection few months back. i couldn't prove it, so i had to buy it myself. i got on line, looked up the part and then i realized that was what i threw out in the trash. it had popped out in my garage. i called to get a new one...it ranged from $17 to $26 at various dealerships. the parts lady asked my name and noticed i had just been in there recently, a few times. i said, yes, and the next thing i was going to do was the fluid change. she told me she's order it and no charge for me and to have me come pick it up. how nice of her. that's how you keep customers, in my mind.

anyways, this seems to be an issue. i'm thinking of rigging a safety wire to the new one so if it does pop out, it won't be lost.

but first, i have to get the front end repaired...got tagged Sunday morning. 17 yr old kid in '06 civic going way too fast in the snow and lost control and slammed into me. he was trying to turn right, as i was leaving the neighborhood. dash cam proved to be useful to the police!

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Coastie05

· #5 · Mar 6, 2019

I just checked if mine was still there since I did a fluid change about 30k miles ago and it is. I wonder why they are popping out? I'm glad you're okay. Kids need to slow down!

Crazydave

· #6 · Mar 9, 2019 (Edited)

Mines been popping out too....

it's really loose in the hole.

I'm gonna try doing this.... I put a thin layer of Permatex grey around the plug hoping that it will "fill up" the space.. waiting for it to dry now.

(Hopefully I will remember to report back)

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Teeps

· #7 · Mar 9, 2019

Not sure of the size but to address the problem maybe something like this https://www.amazon.com/Snap-Tite-Ex...&pf_rd_p=15d8133d-057f-50c4-b161-74339ec6e038
would work.

Reactions: 2

Ron_2015_Civic

· #8 · Mar 12, 2019

Thanks MrRanger, glad you are looking at these vlogs. You have good vlogs on YouTube.

fear24

· #9 · Mar 13, 2019

Teeps said:
Not sure of the size but to address the problem maybe something like this https://www.amazon.com/Snap-Tite-Ex...&pf_rd_p=15d8133d-057f-50c4-b161-74339ec6e038
would work.

i may get one of those just in case. it's half price of the replacement and at first glance, appears to be a better solution than the original.

fear24

· #10 · Mar 13, 2019

save anyone future trouble....

here is the OEM part number if you ever find yourself needing one.

25615-5T0-004

Crazydave

· #11 · Mar 13, 2019

Crazydave said:
Mines been popping out too....

it's really loose in the hole.

I'm gonna try doing this.... I put a thin layer of Permatex grey around the plug hoping that it will "fill up" the space.. waiting for it to dry now.

(Hopefully I will remember to report back)

3 days of 60+ miles commute each way... and still holding in place.... I'll update in a week or so.

red

· #12 · Aug 22, 2019

I just found mine missing and assumed the tech at the dealership forgot to reinstall it (6 months ago). Called them and they are replacing it and doing another flush tomorrow, no charge. Should be a recall on this. I'll contact Honda North America Customer Service for good measure.

scottyrocks

· #13 · Aug 23, 2019

Crazydave said:
Mines been popping out too....

it's really loose in the hole.

I'm gonna try doing this.... I put a thin layer of Permatex grey around the plug hoping that it will "fill up" the space.. waiting for it to dry now.

(Hopefully I will remember to report back)

I wouldn't want even a tiny piece of that to break off and end up in my transmission.

rayscdn

· #14 · Dec 11, 2019

mine is poping out also , i ordered a new one but do i need to refill the transmission fluid?

DCFIVER

· #15 · Dec 11, 2019 (Edited)

What year(s) are these vehicles? Im curious if it is happening across the board or only certain years.

The fill plug will typically pop out if the fluid is over filled or the breather/vent tube is plugged.

However it could also simply be a crappy design. Not the first time.

ATF dipsticks on late 90s to mid 2000 Civics also would pop out as the dipsticks started to age.

jasper60103

· #16 · Dec 20, 2019

I have (2) 2015 Civics Lx.
I owned one since new.
Fortunately, I have not seen this problem.
I would not add any sort of sealer to the plug though.

fear24

· #17 · Dec 26, 2019

it's models with the CVT transmissions.

i have begun checking mine every month when i check the oil, refill the tires, etc.

wakefj

· #18 · Feb 22, 2020

I had the same thing. I changed the fluid a year ago on my 2015 Civic with CVT. Recently, after a trip, it was sitting in the garage and I smelled the strong aroma of tranny fluid. Popped the hood and the fill plug is resting peacefully next to the hole. (??) I thought that I better check the fluid and made the stupid mistake of not warming the engine first and about a quart of expensive HCF-2 came flowing out.

Kerrington

· #19 · Feb 24, 2020

I have a 2014 civic and mine keeps popping out. It’s aggravating. I don’t want to replace a transmission but it sounds like Honda needs to answer why?

Reactions: 1

fear24

· #20 · Jun 28, 2020

so, i changed my transmission fluid again yesterday. aside from a multitude of other issues....the fill plug had popped out and was laying next to the hole. i hadn't checked it since march since i've hardly been driving it now that i've been approved to work from home. but this is obviously an issue for the CVT transmissions. i'm presuming since it's such an easy "put it back in", Honda isn't aware of the gravity of the situation.

just a friendly reminder to check you plugs!

no issues with the CVT so far at 131K miles.

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