How to: Diagnose/Fix DMTL Fault Codes on your BMW

0:00 Intro
0:22 DMTL Explained
2:00 2A17 Fault, DMTL module failure
2:17 2A15 or 2A16 Fault, minor leak detected
4:22 My X5 DMTL Fault
4:45 Purge Valve
6:35 Gas Cap
7:18 DMTL Pump
8:52 Charcoal Canister
9:42 Expansion Tank
10:43 DMTL Service Function Procedure

[@Squad47]

This was a through explanation of the system. However you did not include a check of the fuel pump gaskets or O rings. Also funny you saw the gas cap early with the crack in the seal and in the end you found that to be the problem. Great video!!!

[@Emily1963eh]

I know the fix ended up being simple, but that's some great troubleshooting right there

[@menjicar]

You could usually put a smoke machine where the purge valve goes and either cap the vent valve or use scan tool and close it . And smoke should pressurize in the system and be visible. But this works too shows all the possible components. Love it 👍

[@curtishouze1471]

I was actually glad that you went through the entire system, so that we could see the entire system!👍🏾

[@frankcromosini2050]

Hello and thank you for breaking down the DMTL system excellent visual & components description, component purpose and their location awesome!

[@Nico_335i_DCT]

Great to show the complete system, Chris. 90% of this code is related to the tank cap. The big rubber o-ring will decay over time and starts leaking. My 2009 e93 had that problem too. Thanks for sharing this procedure. Have a great weekend. Dutch regards, Nico.

[@passingasgarage2375]

Dude, you really did a fantastic job breaking the system down. I especially liked the way you drew it out. Definitely helped me understand. I know it turned out to be the gas cap, but you were very thorough and explained it well. Two Thumbs up and another subscriber!!!!

[@veritas17]

Excellent info man, appreciate all this information! It was super helpful so thank you

[@valencia0113]

If you explain more like this would be amazing ! I’m learning like I’m in school thank you now I can solve more than one code 🎉

[@chadriddle3517]

Appreciate the bmw content as always ! I need that ista + desperately… thanks Chris

[@yousefkchik419]

Thank you so so so much. My E70 3.0si had a dmtl fault for over 7 months, filled it up with gas while car is running and weirdly enough code went away. Now i know how to inspect the whole system :)

[@norrismccray2053]

very thorough explanation. Thank you.

[@philipdenner8504]

Good to see a fellow left hander

[@CHICOBM]

This is nice man, thanks for the video

[@Anthony17MORENO]

Wonderful video!! Thanks 🙏🏼

[@pugs1377]

Hmm, looks like you could use some anti seiz on that wheel hub. Good diagnostic vid.

[@bfiane]

Great video thank you!

[@bigwillbassman3398]

Great video, what scan tool are you using learned at a lot from this love your content

[@twinturbo8304]

Great Job 0:15

[@bilalhaidar3]

Hi thanks for sharing this!!! So now any 8E fault in e53 is related to the gas cap???

[@tjolofree1134]

Nice video, very thorough. New to BMWs and now have my first DMTL fault code. During forum research i found step 1 was to check/replace gas cap. Did this, code remained. Confirmed via stealership the DMTL pump was reportedly the issue. Replaced with OEM part myself and "saved" 700.00 in service fees (850 for BMW to do job), fault code remained. Took it off and rechecked hoses, connectors, wires, and pump. All appeared fine, altough i did not open wire harness, looked too clean. After further research found the car needed to be driven awhile to clear DMTL code after pump swap and should clear after the car is turned off and the DMTL cycle is completed, did this and code lingers. Then, found this to be a common issue from other frustrated owners whom struggle with clearing the code. Apparently will need software/BMW scan tool to clear code and try again. Your video was informative for my next go-round. Although, i love the Bimmer, shes making me think of selling her and buying something less complex and pricey to maintain. I love her, but geeez is it silly to dish out so much cash and time for seemingly simple maintenance issues. Plus, seems the maint. schedule prompts for service far too often for a high-end, supposedly well-built, 7 series. Car in great shape, 60K miles, yet do not feel confident in her. Also found out no OEM jack or spare provided, by design?? WTF.. so.. now i too get to stress on getting a flat and being stuck in a fancy, heavy paperweight 🤦‍♂️ Maybe oh maybe i made a mistake seeking The Ultimate Driving Experience. Hoping not.

[@hughneutron5303]

telling you this now. most cars now are this complicated if not more. if you like bmws stick with them, learn their systems. alot of procedures are the same on a billion different bimmer models. hell what this guy is doing on his x5 is the exact same as what i'm doing on my 5 series that's 3 years newer. just location of the canister is a little different. don't rip your hair out now buddy because cars are NOT getting simpler AT ALL

[@lwrixx9396]

I feel exactly!!!! the same way about my beautiful 17 530i. 68k miles and I just don't feel confident in it 😭

[@oskarberrios1829]

Excellent

[@KarolGrom92]

Where did you get ISTA from i cant find it?

[@dennissalisbury496]

A very helpful video for diagnosing my 2004 Land Rover Range Rover Hse 4.4l (BMW M62 TUB 44 Engine). My Scanner runs an EVAP leak test which should verify no leaks?

[@TheBimmerBarn]

Yeah, that forces a dmtl test! Great way to diagnose/confirm your issue.

[@branchesofYAH]

I have a 3.0L X5 2003 e53 BMW, I've replace L.D.Pump-5X, all hoses, charcoal canister, solenoid, checked wiring 3 times, flashed ECM, replaced filter, fuel pump, smoke leak tested twice, and still get high voltage codes/DMTL's C8 or P1447, or 1449, or 2407? what are your thoughts ECM bad?? My mechanics baffled, I'm baffled even the place in Germany that helped flash the ECM is scratching his head. Can I clone it, repair it, or is there anything else you know of??

[@JAydUBr6]

Mine says 3225 DMTL leakage diagnosis pump, activation: Short circuit to B+. I replaced the gas cap and pump, any ideas?

[@dilshansingh3437]

So 2a17 fault would be fixed by putting it a new fuel pump?

[@pelusamui3305]

you explain it so clear!!, let me ask you something. I have a problem when filing gas to the tank,. the nozzle cuts every moment and i cant full the tank. Where you think could be the problem? its a permanent problem i have long time ago. thank you!

[@TheBimmerBarn]

This is a common issue when the charcoal canister has failed. It acts as a filter for outgoing air, so if it's "clogged up" or old, it will not let the air out of the fuel tank fast enough for the gas to come in, so it backs up the filler neck and trips the safety circuit on the gas pump. Hope that makes sense!

[@titob1895]

Great Video thank you how much is a diagnostic computer like the one you use?

[@TheBimmerBarn]

I have a video on my channel called "3 ways to diagnose your bmw" and I have a link to my scanner there! It's a Foxwell, worked really nice for me so far 👍

[@rcao99]

Great video, thanks. Do you have any idea what "(8c) DMTL pump output stage fault" mean? I have replaced the pump, gas cap, it still comes up after a few days driving. It is a E53. Thank you.

[@TheBimmerBarn]

Have you checked the wiring? Does the pump make noise when running the test procedure in INPA? Did you replace the seal on the pump to the canister? Maybe there's a hole or crack in the dmtl pipes that go to your gas tank. Hope that points you in the right direction, good luck and update us when you figure it out!

[@rcao99]

@@TheBimmerBarn FInally I got my inpa cable and inpa installed, it reads 140 error and 142 error, something about DMTL reed-valve not closed... I also ran the dmtl test and valve test, no sounds coming from the rear-left wheel well, sounds like a wiring issue (because I just replaced the DMTL pump and I tested it with 9v batter and it seems worked), but I have carefully checked all the wires coming to the pump nothing seems broken, is there a fuse somewhere? or any idea locating a faulty wire. Thanks

[@CarlosMartinez-tp3zl]

I got a 2b3c dtml system fault

[@drwisniewski]

Thanks for the informative video. What is the diag software you use and does the general public have access to it?

[@drwisniewski]

Nevermind - I see you name it as ISTA+ later in the video. Thank you!

[@TermsAndConditionsApply]

@@drwisniewskiI need ISTA+! Do you have it? Where did you find it? I have so many tabs open my brain might explode

[@philippemorr7477]

What about p2401 and p2419 on e90

[@fraizer2600]

Very interesting. Do we have after years or milleage change this filter near this module ? On a diesel ? :)

[@fraizer2600]

And about the carbon active do we need to change it after some years ?

[@dancaraya]

What if it's a code 2A13?

[@syedomar269]

I got a 2A18 code, it says DMTL Diagnosis Module Tank Leakage, Heating: Input Signal. Does the DMTL pump have a heating element? I was wondering if this was a connection issue although what do you think? Anyone had this code before?

[@TheBimmerBarn]

Yes it does have a heating element on some models, the whole pump needs to be replaced. Hope that helps!

[@syedomar269]

turns out it was disconnected the whole time, i reconnected it and now i am getting P2419, P2401, and P240A codes lol, I tried testing the pump using INPA and the heater turns on and off fine although when I go to activate the pump or the valve it flashes on and immediately turns off again. Not sure if that means it activated successfully or it failed to stay "on/open". Any suggestion? 07 335i@@TheBimmerBarn

[@tylerlevitt523]

What would P1148 on a 2007 x3 mean you think?

[@TheBimmerBarn]

Just a quick google tells me that's possible an Air/Fuel ratior problem, or bad oxygen sensor. The description might be more accurate if you scanned it with something for BMW's, and then I would go from there! Hope that helps :)

[@douglasmiller1467]

I really like BMW cars but they scare the hell out of me when it comes to maintenance.

[@nzwakele]

As they should

[@AlanBurnham]

10:53 Procedure step one is "terminals switched." What terminals? Where?

[@TheBimmerBarn]

It's a term for a 12v power circuit in the car that turns on/off when the key is on/off. Controlled by a series of relays and switches and timers.

[@AlanBurnham]

@@TheBimmerBarn Thanks. So that is saying turn ignition on. If it is already on, turn off then on? I've never heard or seen it expressed that way.

[@TheBimmerBarn]

@@AlanBurnham Exactly, for some diagnostic procedures, the car has to turn off then on again!

[@alexhawley6488]

What about 2a12

[@TheBimmerBarn]

2A12 is a DMTL solenoid valve code, probably the first component (the purge valve) we looked at. The only other valve in the system is built into the dmtl pump itself, so I'd look at those two places!

[@twinturbo8304]

Bmw sure went to a lot of trouble . I always wondered what all that crap was behind my fenders

[@JohnDoe-ew6ru]

Do like I'm going to do just bypass the whole thing and get rid of it get a rubber plug and put it in the side of your intake where it plugs into it and do away with the whole system get a gas cap that releases the fumes through the gas cap like every other vehicle does it doesn't have all this nonsense it's going to break down on you and keep check engine lights on your car all the time every other year get rid of it

[@JohnDoe-ew6ru]

But I got a E90 I don't know if it'll work the same way on that car

[@twinturbo8304]

I didn't vote for Biden either