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Old 06-06-2015, 12:54 PM   #1
Watermelon
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Join Date: Oct 2013
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Posts: 37
My Ride: 2002 325ci
Please help! SES code p2004 or p1518

Hello fanatics,

So last night i was driving home normally when my ses light randomly came on. I wasn't worried because a few weeks ago I installed bimmerbrake headers and figured it was the car doing a lean check and realized there are no cats. However, this morning i scanned it with my bluetooth scanner using torque and the code came up as p2004 "intake manifold runner control stuck open bank 1"

I tried looking this up and had no help, i came across a long list of every code here on the forum and the same description comes up for p1518. I can't find any threads or info on this other than a website telling me my manifold runner is stuck open. My only guess as of right now is my disa could have gone out since it is still original. I will be pulling it tomorrow to check if the vacuum broke or if anything is damaged, but i pulled it a few months ago to check the pin and all was fine.

Any help would be greatly appreciated, thanks in advance.

Car is a 2002 325ci and just crossed 149k.

Last edited by Watermelon; 06-29-2015 at 07:48 PM.
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Old 06-07-2015, 09:04 PM   #2
Watermelon
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So a little update, i cleared the codes and took the car for about a 20 minute drive. It drives perfectly normal and i didnt notice anything weird, accelerated with normal power and all. The light has not yet came back on but i'll keep waiting a few days to see if it does.

A friend of mine who works on a lot of people's cars told me he has seen this code come up before on the bmw inline 6s and what had happened was there was carbon built up in the intake manifold runners and there are units which control the air flow in the runners which then get stuck. He told me that to fix it i woukd have to take off the intake manifold and clean it all out and check to see if the unit works properly. If the code does come back i will most likely buy a ccv system along with a new starter both as preventative maintenance to do while the intake is off since they will be much easier to access.
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Old 06-29-2015, 07:51 PM   #3
Watermelon
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So another update, yesterday driving on the highway the ses light returned. Scanned it at home and still the same code. I guess it'll be time to order intake manifold gaskets and prep for taking it off to check it out but i'd like to get some more info from anyone who has some.

Just googling the issue, disa valves keep coming up which persuades me it may just be the disa which has failed electronically but my friend still suggests it is a runner inside the manifold which is stuck open. Again, any help would really be appreciated. Car still runs fine.
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Old 06-29-2015, 08:13 PM   #4
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Before you knee jerk and pull the intake, these are unusual codes and I have never seen a BMW I6 that needed the intake removed and carbon cleaned up. They may have carbon build up, but not enough to cause codes or problems.

I would post up Freeze Frame data next time the SES/CEL/MIL comes on.

I have tried to find these codes in the Bentley Manual and did not see them listed, so not 100% sure the tool properly displayed/translated the codes?

The DISA is easy to remove, 1 wiring connector and 2 Torx screws.

See this link for info on the DISA - http://forum.e46fanatics.com/showthread.php?t=897616
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old 06-29-2015, 08:17 PM   #5
ReIntegration
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I had this issue with my 01 330ci back when I had it. Took out the whole intake manifold and checked to see if the runners were really stuck in your case bank one. Which they were tight and sprayed with carb spay just to loosen up the runners and worked but still had the issue afterwards so out came the manifold again and this time I replaced the runner position sensor and that fixed the problem.
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2001 330Ci (My uncle was the original owner then given to me as a secondary to my 03)(Sold)(Kept younger brother)
2003 330Ci (Current & original owner - Born on 1.10.03)(Had it since new born. Delivered from Regensburg on 2.24.03)

Quote:
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Ready to get destroyed?
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Old 06-29-2015, 10:07 PM   #6
Watermelon
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I did end up checking the disa but i forgot to mention it, mechanically it all seems fine. Vacuum works and no rattling even though its at 149,xxx miles. Only reason i don't 100% think it is the disa is that threads with disa issues throw lean codes or things like that with the car running weird. I did have a mysterious issue when i would back out of my driveway and with engaging/disengaging the clutch the idle woukd bounce a lot and eventually stall. Along with a bouncy idle coming to a stop after driving. However that seemed to go away after some fuel system cleaner and icv cleaning. It does sometimes still jump around though.

Also with the disa being stuck open there should be pretty bad low end torque, however i don't think the car is losing much power under the 3k rpms.

ReIntegration's post solidified the carbon build up in the runners theory. However on real oem i can't find like an inside view of the intake where it shows the runners and the position sensor, but i haven't ever seen the insides of one of these manifolds so i guess i just have to take it off to find out. And granted i don't really know what the runners look like inside or how they function so thats why it's hard for me to get a finger on the issue.

Last edited by Watermelon; 06-29-2015 at 10:09 PM.
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Old 06-29-2015, 11:53 PM   #7
jfoj
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Quote:
Originally Posted by Watermelon View Post
I did end up checking the disa but i forgot to mention it, mechanically it all seems fine. Vacuum works and no rattling even though its at 149,xxx miles. Only reason i don't 100% think it is the disa is that threads with disa issues throw lean codes or things like that with the car running weird. I did have a mysterious issue when i would back out of my driveway and with engaging/disengaging the clutch the idle woukd bounce a lot and eventually stall. Along with a bouncy idle coming to a stop after driving. However that seemed to go away after some fuel system cleaner and icv cleaning. It does sometimes still jump around though.

Also with the disa being stuck open there should be pretty bad low end torque, however i don't think the car is losing much power under the 3k rpms.

ReIntegration's post solidified the carbon build up in the runners theory. However on real oem i can't find like an inside view of the intake where it shows the runners and the position sensor, but i haven't ever seen the insides of one of these manifolds so i guess i just have to take it off to find out. And granted i don't really know what the runners look like inside or how they function so thats why it's hard for me to get a finger on the issue.
The problem is not in the intake with carbon.

I would get another tool to read codes and post Freeze Frame data.

Do what you want, but the problem is not with carbon build up in the intake.

If you do not trust me, you should read the following:

I would get Touch Scan for Android for $3.95 and at least verify the codes are what you say they are. Touch Scan is far more accurate IMHO.

Read the 2 links below:

http://forum.e46fanatics.com/showthread.php?t=897616

http://forum.e46fanatics.com/showthread.php?t=929501

Need to see Freeze Frame info if the SES/CEL/MIL is on and Fuel Trim values at both warm idle and a steady highway cruise between 45-60 MPH.

P0102 means for some reason there is not likely a signal from the MAF. Verify if the MAF connector is properly plugged in, sometimes the female terminals in the connector are spread and loose on the MAF pins, sometimes there are broken wires inside the wiring harness between the MAF and the wiring box near the throttle body and sometimes the MAF just is bad with no output signal.

DO NOT buy a cheap ebay MAF, there are many Asian counterfeits on the market that do not work properly. See of there is an MAF reading in Grams/Sec. Most E46 have an idle MAF reading of between 3.5-4

Note, there may or may not be Lean Codes showing up. Lean Codes usually trigger at around 10% Fuel Trim values or higher. Keep in mind that sometimes these engines can have a Lean condition that does not or only intermittently triggers Lean Codes. This is why monitoring the Fuel Trims in real time is important. Ideal Fuel Trim values are typically in the 0% to +2.5/+3.0% range.

Read this thread - http://forum.e46fanatics.com/showthread.php?t=1057387

Make ABSOLUTELY sure the O2 sensor wiring has not been mixed up, read these links:

http://forum.e46fanatics.com/showpos...0&postcount=27

http://forum.e46fanatics.com/showpos...0&postcount=26

Read my "BMW 20 Questions" comments in this thread - http://forum.e46fanatics.com/showthread.php?t=1059972

Check for or be aware of cracked valve covers and bad valve cover gaskets:

http://forum.e46fanatics.com/showthread.php?t=1021219

http://forum.e46fanatics.com/showthr...e=2&highlight=

http://forum.e46fanatics.com/showthread.php?t=1053359

This information ASSUMES that spark plugs have been checked/replaced. If they have not been inspected, you also need to check for oil filled spark plug wells due to a leaking/cracked valve cover gasket.

http://forum.e46fanatics.com/showpos...2&postcount=11

Search YouTube for Scotty Smoke Test. Do what Scotty does or build a tester from related video. Remove the oil fill cap and make sure the crankcase fills up with smoke, put the oil fill cap back on and check for leaks around the valve cover, oil fill cap, dipstick tube and CCV hoses. Cracked valve covers are pretty common on the E46 as it ages.

Note that the Scotty Smoke Test method is not so good for smaller air/vacuum leaks or fully filling the engine crankcase, for this you really need a smoke machine that can provide a solid and continuous low pressure smoke stream. So plan on building a smoke tester of you thing you will use if more than once or may have smaller and harder to find leaks.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old Yesterday, 08:24 AM   #8
Watermelon
Registered User
 
Join Date: Oct 2013
Location: Illinois
Posts: 37
My Ride: 2002 325ci
Quote:
Originally Posted by jfoj View Post
The problem is not in the intake with carbon.

I would get another tool to read codes and post Freeze Frame data.

Do what you want, but the problem is not with carbon build up in the intake.

If you do not trust me, you should read the following:

I would get Touch Scan for Android for $3.95 and at least verify the codes are what you say they are. Touch Scan is far more accurate IMHO.

Read the 2 links below:

http://forum.e46fanatics.com/showthread.php?t=897616

http://forum.e46fanatics.com/showthread.php?t=929501

Need to see Freeze Frame info if the SES/CEL/MIL is on and Fuel Trim values at both warm idle and a steady highway cruise between 45-60 MPH.

P0102 means for some reason there is not likely a signal from the MAF. Verify if the MAF connector is properly plugged in, sometimes the female terminals in the connector are spread and loose on the MAF pins, sometimes there are broken wires inside the wiring harness between the MAF and the wiring box near the throttle body and sometimes the MAF just is bad with no output signal.

DO NOT buy a cheap ebay MAF, there are many Asian counterfeits on the market that do not work properly. See of there is an MAF reading in Grams/Sec. Most E46 have an idle MAF reading of between 3.5-4

Note, there may or may not be Lean Codes showing up. Lean Codes usually trigger at around 10% Fuel Trim values or higher. Keep in mind that sometimes these engines can have a Lean condition that does not or only intermittently triggers Lean Codes. This is why monitoring the Fuel Trims in real time is important. Ideal Fuel Trim values are typically in the 0% to +2.5/+3.0% range.

Read this thread - http://forum.e46fanatics.com/showthread.php?t=1057387

Make ABSOLUTELY sure the O2 sensor wiring has not been mixed up, read these links:

http://forum.e46fanatics.com/showpos...0&postcount=27

http://forum.e46fanatics.com/showpos...0&postcount=26

Read my "BMW 20 Questions" comments in this thread - http://forum.e46fanatics.com/showthread.php?t=1059972

Check for or be aware of cracked valve covers and bad valve cover gaskets:

http://forum.e46fanatics.com/showthread.php?t=1021219

http://forum.e46fanatics.com/showthr...e=2&highlight=

http://forum.e46fanatics.com/showthread.php?t=1053359

This information ASSUMES that spark plugs have been checked/replaced. If they have not been inspected, you also need to check for oil filled spark plug wells due to a leaking/cracked valve cover gasket.

http://forum.e46fanatics.com/showpos...2&postcount=11

Search YouTube for Scotty Smoke Test. Do what Scotty does or build a tester from related video. Remove the oil fill cap and make sure the crankcase fills up with smoke, put the oil fill cap back on and check for leaks around the valve cover, oil fill cap, dipstick tube and CCV hoses. Cracked valve covers are pretty common on the E46 as it ages.

Note that the Scotty Smoke Test method is not so good for smaller air/vacuum leaks or fully filling the engine crankcase, for this you really need a smoke machine that can provide a solid and continuous low pressure smoke stream. So plan on building a smoke tester of you thing you will use if more than once or may have smaller and harder to find leaks.
Thanks for all the info! The car has had a good amount of maintenance performed on it already. It was a 1 owner car and i have full maintenance history all of which was done at the dealer. The PO did have the fuel pump done and oil pan gasket done around 120k if i remember correctly. I picked the car up at 135k.

Some engine work i have done
Fuel filter
Beisan systems vanos seals
VCGwith all grommets and middle pieces
Full cooling system refresh
Upper/lower intake boot
OFHG
Spark plugs

All parts used were genuine bmw or oem.

When i installed the headers i made sure i triple checked all the o2 sensor placements. I labeled the connectors along with the sensors themselves so i don't think the sensors are mis matched.

I will start trying to check out all the various tips you gave me and try to get some freeze frame data as soon as i can to read the fuel trims and all. However, what makes you so sure it isn't the intake manifold? I'm just curious as to why you are so sure to knock it out as one of the possibilities right away.
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Old Yesterday, 09:07 AM   #9
jfoj
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My money is on CCV/Crankcase air leak problems. If the STFT area over +10% consistently this is typical of a crankcase air leak.

This is a guess based on the codes, but Freeze Frame info would provide more info and details as to what is going on.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old Yesterday, 09:37 AM   #10
jfoj
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This is not an intake manifold problem.

I am not even sure these codes are valid, I have yet to see an E46 with these codes.

There is no way there is a carbon problem in the intake.

There may be a problem with a broken DISA flap caught in the intake from a prior DISA, however, even when this has happened in the past there have never been these specific codes show up, just misfiring and fuel trim problems for specific bank.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old Yesterday, 09:55 AM   #11
Watermelon
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Alright well i guess next step is just to download the touch scan app to confirm codes, and record some live data and go for a drive. I'll update when i get any new info.
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Old Yesterday, 10:19 AM   #12
jfoj
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Quote:
Originally Posted by Watermelon View Post
Alright well i guess next step is just to download the touch scan app to confirm codes, and record some live data and go for a drive. I'll update when i get any new info.
Agree, a bit cheaper, faster and easier than wholesale removal of the intake manifold.
__________________
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old Yesterday, 01:56 PM   #13
Watermelon
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So actually i have some more info though i haven't done further investigation. Since i bought the car it has always had a strange issue for the first about 5 miles after filling up. After i fill up on a full tank, (yes i stop after it first clicks) when i drive with my foot steady and then add throttle, the car has a violent jolt. No ses lights or anything. Just if i press the throttle down itll have a strong hiccup and the faster i press it down the more violent it its.

So today i just filled up on a full tank but this time the pump stopped first at 10 gallons, then another two times before finally stopping at 15.4 gallons which is full since i had a bit left in the tank. And then again the jolting issue was present. However ive never had the pump click multiple times before getting full. Maybe this has something to do with the code, maybe not.
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Old Yesterday, 04:29 PM   #14
jfoj
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Get Touch Scan, verify the codes, post the Freeze Frame data, monitor the warm idle Fuel Trims and post this info back for review.

Just grabbing at straws for the moment.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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