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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Mon, Apr-26-2010, 07:09:55 PM   #31
CKintner
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Default DMTL Pump Code

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Originally Posted by MadeInPhilly View Post
what is the code for a failing DMTL pump? or the cat code that you got? what does DMTL stand for?
I think the code is P1434
I used a Actron reader from Autozone. I searched for a while and I think the P1434 code translates to the DMTL pump failure.
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Old Sat, Jun-26-2010, 12:37:59 PM   #32
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Default

I know this thread hasn't been updated for a while. I got the code that says diagnostic tank leak (Code 176). VAC read the code and they said they have no clue. After searching on the forums, I am assuming that it is the pump because they cleared the codes multiple times and it kept coming back every 500 miles of driving. So I guess I will be making an appointment or attempting to get this taken care of at VAC. I will let you guys know what happens.
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Old Thu, Nov-22-2012, 06:15:07 PM   #33
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Default Re: DMTL pump throwing SES light?

I just got an SES as well and looked up the codes and found out it's DMTL related. I am posting just to add the codes to this thread for anyone else doing any future searching.

Using my CEN-TECH 99722 OBDII/EOBD Scanner Code Reader, I got code P1434.

Using the Peake R5 FCX 3 I got table 1b and codes
b0 - DM-TL Error
b5 - Filler cap open

Given the b5 code, I just double checked my gas cap was on tight and reset the codes. So far the SES has not come back on just running in my garage. Hopefully that did it my case, I will post back up if the SES returns.
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Old Wed, Mar-27-2013, 01:53:00 AM   #34
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Default Re: DMTL pump throwing SES light?

I have a 2002 m3 that shot P1434 during smog test (and a few times over the past months). So, I'll be ordering up a DTML, sealing grommit, and gas cap.
The car is at UCLA, I'm not. Can anyone recommend a reasonable shop?

Stuart
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Old Mon, Apr-01-2013, 02:41:29 AM   #35
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Default Re: DMTL pump throwing SES light?

Just wanted to let you guys know I got this same code a good 5,000+ miles ago and replaced a canister like sensor in the rear of my car. Code went away after driving under 100 miles. I found the instructions on how to replace here somewhere, very easy fix.
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Old Mon, Feb-17-2014, 01:41:17 PM   #36
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Default Re: DMTL pump throwing SES light?

Can anyone give me the pump's part number and the best place to order?
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Old Tue, Feb-18-2014, 05:29:23 AM   #37
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Default Re: DMTL pump throwing SES light?

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Originally Posted by 1BadPig View Post
Can anyone give me the pump's part number and the best place to order?
Should be P/N #13

http://realoem.com/bmw/showparts.do?...88&hg=16&fg=10
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Old Sat, Dec-06-2014, 01:36:44 PM   #38
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Smile Code P1434 "No DTC definition" was New DMTL Pump for Me

03. M3, Convertible, 6sp, 103,000 miles, no accident damage, garaged

History: Out of nowhere SES lit. Code: P1434 "No DTC definition found" Checked forums and found reference to gas cap and DMTL pump as possible causes. Some references were also made to Secondary Air Pump but was able to confirm mine was operational and I think that will pop a different code than P1434.

Purchased (at dealer), 13 Nov 2014:
p/n 16-11-7-222-391 FILLER CAP List $31.99 Net $20.86
p/n 16-13-7-193-479 LEAK DIAGNOSTIC...(pump) List $170.24 Net $132.08

Actions:
1. Replaced filler cap, 1 minute (Yeah, I'm slow), SES remained lit for next 100 miles and multiple restarts
2. Replaced pump, 30 minutes
3. Cleared codes, 2 minutes
4. No SES again after more than 200 miles and 30 restarts, 2 weeks.

Notes:
1. Pump is fairly easy replacement on E46 M3 because more room between muffler heat shield and pump/filter assembly than regular E46.
2. Use car ramps (backing up, of course) for easy access. Have a nice blanket to lie on and maybe a little wine and cheese for a picnic. Perhaps a pillow if you want to take a nap. (Hey, it was a nice day in Florida when I did this.)
3. Need #10 socket and/or #10 open/box end wrench, and #20 torx bit with some means to turn it (there isn't enough room for a ratchet head to fit on a torx bit. For easy access to torx bolts on regular E46 (and I suppose an M3 too) loosen the two main bolts that hold up the entire pump/filter assembly and lower it a couple of inches.
4. SES should clear itself after several restarts (20+?) and a few miles (100+?) but a lot faster if you have friend at AutoZone or Advance who will reset codes even though they're not supposed to.
5. Google "bmw e46 dmtl pump replacement" for many pics and references for doing this easy job.
6. Hope this helps someone.
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Old Thu, Sep-01-2016, 11:35:48 AM   #39
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Default Re: DMTL pump throwing SES light?

did anyone experience bad gas mileage with this pump being defective?
mine has been bad for about 5000 miles now and my MPG is at roughly 13.5 to 14 on a good day.
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Discussing DMTL pump throwing SES light? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)