P0106 MAP Sensor & Limp - Chevy and GMC Duramax Diesel Forum
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Old 12-01-2009, 12:48 PM   eBay Motors  #1 (permalink)
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P0106 MAP Sensor & Limp

I have gotten P0106 & U0100 codes recently. I removed the MAP & cleaned with some MAF cleaner & it worked great for a few days but codes came back & back into limp mode. Does this mean my MAP sensor needs to be replaced? If so, where would I buy one? Any other ideas of what to try?
I removed my Edge and that didn't seem to help.
Thanks! Tony
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Old 12-01-2009, 02:02 PM   eBay Motors  #2 (permalink)
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P0106 is MAP sensor performance issue, not a MAF. The MAF is near the air cleaner, two different sensors.
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Old 12-01-2009, 02:06 PM   eBay Motors  #3 (permalink)
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The MAP is giving me problems, not the MAF. I cleaned the MAP with MAF cleaner.
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Edge Juice w/ Attitude & hot unlock
TransGo Jr - Volant air intake
MagnaFlow 5" turbo back exhaust
Diamon Eye downpipe - Kennedy boost stick
Blocker plate & finger stick - Firestone airbags
Viair compressor - Train horn -3 gal air tank
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Old 12-01-2009, 04:29 PM   eBay Motors  #4 (permalink)
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GM had many problems with the MAP sensor on the 06 vehicles -- one was water into the sensor and freezing. To help the problem, they relocated the sensor. I believe there was a TSB (GM -- Tech Service Bulletin) to do a modification.

I do not have the TSB.
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Old 12-22-2009, 06:43 AM   eBay Motors  #5 (permalink)
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Mine is/was doing the same thing.

The GM fix is to attach a 1 1/2" piece of 3/8" brake line to the MAP sensor. The end of the tubing gets cut at a 45* angle. This stops the sensor from freezing up.

Here is a pic I got from another forum of the fix....need to get mine done ASAP...

EDIT - when attaching the tube to the sensor, use epoxy and put a flare on the end of the tubing to prevent it from falling into the intake....that would be bad...
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Old 12-22-2009, 07:56 AM   eBay Motors  #6 (permalink)
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Wow, I would be very hesitant to put that in my intake for fear of it coming of and going through the engine. The MAP have been working fine for 99% of the trucks (if not more), I'd take my chances with the old style.
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Old 12-22-2009, 09:34 AM   eBay Motors  #7 (permalink)
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I disagree with your 99% figure. If it were such a small percentage, I doubt GM would have issued the bulletin they did regarding the MAP sensor fix. Up here in colder climates, the MAP freezing is a definite issue with these trucks...

I agree with the fear of the tube going through the engine, but if it is flared properly and epoxied to the MAP, the odds of it falling in are pretty slim. Better chance of being rear-ended when my truck goes immediately into limp mode due to a frozen MAP....
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Old 12-22-2009, 09:42 AM   eBay Motors  #8 (permalink)
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Quote:
Originally Posted by IdahoRob View Post
Wow, I would be very hesitant to put that in my intake for fear of it coming of and going through the engine. The MAP have been working fine for 99% of the trucks (if not more), I'd take my chances with the old style.
i am going to have to argree with rob thats alittle iffie
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Old 12-22-2009, 09:57 AM   eBay Motors  #9 (permalink)
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Originally Posted by chrisk1500 View Post
I disagree with your 99% figure. If it were such a small percentage, I doubt GM would have issued the bulletin they did regarding the MAP sensor fix. Up here in colder climates, the MAP freezing is a definite issue with these trucks...

I agree with the fear of the tube going through the engine, but if it is flared properly and epoxied to the MAP, the odds of it falling in are pretty slim. Better chance of being rear-ended when my truck goes immediately into limp mode due to a frozen MAP....
Your opinion is welcome here. Welcome to the site also.

In all the years working on these trucks and working with 100's upon 100's of customers, I've never heard of this problem. Been wrong before though.

What is freezing? Running water meth? I know where and what it is but have a hard time figuring out how that much moisture could collect in something the is pointing down in the intake manifold, and how it stays frozen in a warm engine.

On GM knowing what is best, I'll hold back my comments
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2002 LB7 Max'd Out 9.71@141+MPH on #2 fuel only, MPI Twins


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Last edited by IdahoRob; 12-22-2009 at 10:02 AM.
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Old 12-22-2009, 10:31 AM   eBay Motors  #10 (permalink)
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I live in the frozen north (Saskatchewan, Canada).

Take yesterday for example. It was -20* C (not too cold) and I drove into the city to pick up some parts for the house. I got to the Home Depot and shut the truck off while I went inside for about an hour. When I came back outside, I turned on the key to let the glows do their thing and then I started the truck. Immediately, the check engine light came on the truck was in 'reduced power mode'. I put the handheld scanner I have in the truck on and came out with a P0106. I cleared the code and it came back immediately.

I drove home in limp mode and got on the internet ASAP. I found that GM has an update (the one I posted about) for the MAP sensor due to it freezing up. I then went outside and pulled the MAP out of the tube. Sure as shit, there was a glop of icy oily goo blocking the hole in the MAP.

I warmed the MAP up, sprayed MAF sensor cleaner in it, and then put it back on the truck. The light didn't come back on and the truck came out of limp mode.

Needless to say, GM's fix looks pretty Mickey Mouse to me, but if it keeps me from getting stranded in the middle of nowhere, I guess I will give it a shot.....

I have not been around the DMAX for very long, but I am certainly no stranger to diesel engines nor am I a stranger to GM vehicles. In fact, I get wholesale pricing at the local dealership parts department because I am in there so often for parts...not the kind of thing to be proud of....LOL!
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