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Old 03-25-2015, 08:02 PM
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Default NOX module got me.

Popped the P0100 and U0106 codes and lost the glow plugs. I thought I unplugged those things....guess not. Just a warning to those about to ******...don't miss that connection.
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Old 03-25-2015, 08:59 PM
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I've had that happen on a few trucks including mine. I think water and dirt gets into the connector on top of the nox module and it shorts out.
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Old 03-25-2015, 09:17 PM
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Is this unique to the 15's? Is it just one module or are there multiples? I know the 15's have that 3rd O2 in the tailpipe.

Just curious. I haven't used an X4 on a 6.7 yet
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Old 03-26-2015, 06:52 AM
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Quote:
Originally Posted by UNBROKEN View Post
Popped the P0100 and U0106 codes and lost the glow plugs. I thought I unplugged those things....guess not. Just a warning to those about to ******...don't miss that connection.
Can you explain in more detail what you mean about what failed and why? I guess Ive never heard how a NOX sensor/module issue can make your glow plugs innoperable. I have a 2011 and I literally disconnected the NOX sensor connector from the NOX module and left the sensor in the ***. I also completed disconnected the NOX module from the main harness and removed the whole NOX module unit from the truck. The NOX module has been in my garage since I ******d it a couple years ago and no problems.
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Old 03-26-2015, 06:57 AM
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I dunno why but apparently the NOX module, glow plugs and MAF are all on the same circuit. I meant to disconnect the modules from the main harness...just forgot about it I guess. I got the codes and lost the glow plugs...that's the tell-tale sign that the module shorted out. I even put dielectric grease in the connection when I unplugged the sensor....still shorted out.
I'm gonna pull them off today and throw a new fuse in...should be good to go.

Last edited by UNBROKEN; 03-26-2015 at 07:07 AM.
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Old 03-26-2015, 07:46 AM
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yeah, I can see how if they're all on the same VREF, if you short one out or short out the NOx module via a sensor lead how it could cause some issues down the chain...

Thanks for the PSA, Rico
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Old 03-26-2015, 07:36 PM
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So just out of curiosity I unplugged the rear module first, threw in a new fuse and immediately popped it. Unplugged the front module, threw in another fuse and all is well.
The plug for the sensor on both was/is full of dielectric grease so I have no idea why it had issues.
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Old 03-29-2015, 07:25 PM
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This happened to me today. I've been ******d for 9k miles.
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Old 03-29-2015, 08:20 PM
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Hell mine didn't make it 1000 miles before it happened.
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Old 03-29-2015, 08:27 PM
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That's crazy. I'm going to remove the modules and Def tank and lines when it gets warm.
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Old 05-25-2017, 07:39 AM
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I'm having the same issue with my 14. Both modules are just unplugged and the connectors are just hanging there. I've had it happen every couple thousand miles or a couple hundred miles it seems to pop another fuse. I talked to the service manager at the dealership and he said it has something to do with the software within the programming of the ECU. It runs a system check every so often to look for the modules and if they aren't hooked up it seems to blow the fuse. From what I gathered from him the change was made on the 13's going forward. I was wondering if this could be fixed with the tunes I am running or if I have to get creative and make some changes to the circuit to mimic the modules operating correctly.
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Old 05-25-2017, 07:58 AM
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Any more direction or pics on what to do? How do you keep this from happening on a 15' that is dereeted?

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Old 05-25-2017, 09:08 AM
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Quote:
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....I talked to the service manager at the dealership and he said it has something to do with the software within the programming of the ECU. It runs a system check every so often to look for the modules and if they aren't hooked up it seems to blow the fuse.....
That's horse ****, that's just your dealer making **** up to sound knowledgeable. Programming will NOT blow a fuse.

Any way it happend to me also a few hundred miles after weight loss. I left the module plugged into the main harness and just unplugged the sensors. Got the codes after the first rain storm. Found green stuff in the front module sensor socket, removed both and greased and taped up connectors and No issues since
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Old 05-25-2017, 09:21 AM
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I've been through about 5 or 6 blade fuses so far trying to get it to go away. It keeps coming back sometimes sooner sometimes later and I noticed it does depend on the weather and it's never at an exact mileage. I am going to check the connectors again clean them out with alcohol and pack them with dielectric and wrap them with a glove or something to make it water tight. I originally had them both connected and ran almost 8k miles then popped the fuse I disconnected the rear most module first and blew a fuse right away then tried disconnecting the one towards the front on the inside of the frame rail and it went away for about 6k miles but came right back on again one day. Cleared the code tried another fuse and blew right away again.
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Old 05-25-2017, 09:28 AM
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if you can't solve the issue
why not run an auto-resetting fuse?
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Old 05-25-2017, 09:59 AM
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Just ordered one from littelfuse, should be in some time next week. I am still going to try to clean out the connections and pack them with dielectric to see if that fixes the problem first. If it doesn't fix it then I will try the auto reset blade fuse it was about $6 shipped to my door.
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Old 05-25-2017, 11:16 AM
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they work well for the random fuse blowing problems and even troubleshooting

now if it blew a fuse every few minutes then I would be inclined to find the problem
sooner than later
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Old 05-25-2017, 12:17 PM
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Yeah it's not that bad lol. Thanks for the help and I will update once I get around to working on it when I get back from vacation.
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Old 05-30-2017, 01:37 PM
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I haven't had any of these codes yet. How many of these NOX modules are there on a 2015 and where are they located? I remember seeing two on the frame (one on the inside and one on the outside). Plus the particulate matter sensor by the tailpipe. The PM sensor is already taken care of. Thanks in advance.

B
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Old 05-30-2017, 02:09 PM
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Quote:
Originally Posted by Be.jammmin View Post
I haven't had any of these codes yet. How many of these NOX modules are there on a 2015 and where are they located? I remember seeing two on the frame (one on the inside and one on the outside). Plus the particulate matter sensor by the tailpipe. The PM sensor is already taken care of. Thanks in advance.



B


3. There is also one at the rear tailpipe section


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Old 01-22-2019, 04:04 PM
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Bringing back an old post here. Getting the p0100 and p0106 codes. Ive read all of the threads about this post because about a year ago i had the same issue. Read about it and saw that it was the nox sensors getting water. I went under my truck unplugged the one in the front of the truck and greased it up and bagged it and replced my fuse and was all good. I didnot unplug the back sensor at the time because i didnt for whatever reason. But my problem was fixed for 2 years. Now last week im getting the same codes so i knew right were to go. I checked my bag and plug to make sure no water got in and there was some water in the bag so i redid my seal job and looked for a blown fuse. No blown fuse. Reset codes and still got them back. Did more reading and discovered there are 2 sensors so i ended up unplugging the back one and sealing it up good too. Now both sensors are unpluged and fuse is still not blown. I cleared codes and 10 mins into driving they are all back on. Im at a loss. No sensors plugged in and both connectors were cleaned and dried and greased and sealed. Fuse was checked 2 tomes and its not blown. HELP from others who have solved this issue? Am i missing somthing?
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Old 01-22-2019, 07:14 PM
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Your ecm on the pass side firewall. Unplug the 3rd plug . The one closest to the drivers side. This harrness goes to all the sensors for the emmision crap. Just unplug it for now and see if it fixes your problem. Unplug it and clear your codes and drive it.

https://ostsaz.com/products/blank-ec...=3209457270808

If it works buy this and your done.
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Last edited by Swaan; 01-22-2019 at 07:19 PM.
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Old 01-23-2019, 02:13 AM
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Quote:
Originally Posted by Swaan View Post
Your ecm on the pass side firewall. Unplug the 3rd plug . The one closest to the drivers side. This harrness goes to all the sensors for the emmision crap. Just unplug it for now and see if it fixes your problem. Unplug it and clear your codes and drive it.

https://ostsaz.com/products/blank-ec...=3209457270808

If it works buy this and your done.
Thats awesome i had no idea that plug would disconnect that entire harness. This is good to know. I have bad news though. 5 minutes after reading your post i gave this a try with the 3rd plug and started my truck and cleared the codes and light came back on immedietly. Turned off the truck and back on and tried to clear again and it came right back a second time.
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Old 01-23-2019, 07:52 AM
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You got something else going on then.. I would get in touch with your tuner and tell him what's going on.
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Old 12-26-2019, 04:58 PM
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I am getting the same codes about high fuel rail circuit. Where are these fuses that blow are they under the hood or on the module? My glow plugs are stuck on and won't shut off.
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Old 07-15-2020, 01:03 PM
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Quote:
Originally Posted by Swaan View Post
Your ecm on the pass side firewall. Unplug the 3rd plug . The one closest to the drivers side. This harrness goes to all the sensors for the emmision crap. Just unplug it for now and see if it fixes your problem. Unplug it and clear your codes and drive it.

https://ostsaz.com/products/blank-ec...=3209457270808

If it works buy this and your done.
So will this blank prevent the code that popped up from the harness not being plugged in? My original code went away, but then I got the 0074 from the harness being disconnected
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Old 07-16-2020, 07:17 AM
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^^^ it might have something to do with your tuning that was used on your truck?

I worked on a truck one time that had an issue with the tps. It turned out that the tps and one of the sensors in the d p f share a 5 volt reference. When it was d e l e t e d the owner or whoever did the d e l e t e forgot to disconnect one of sensor and just ripped it off. So it shorted out that 5 volt reference and would send false readings for the tps. This caused the truck to go into limp mode at random times. I unplugged the emissions plug from the ecm and that fixed the issue. Never got 0074 code.
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Old 07-18-2020, 06:50 PM
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Had this exact issue come into the shop Friday.
Blew, I believe, fuse 37? Canít remember.
Had maf codes and something else.
Nox module was still plugged in.
Must have shorted internally.
Unplugged, wrapped the harness connector and replaced the fuse.
Customer was on his way.
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