well, its that old topic again: P0108 and DSC issues.

I recently (2 months?) had a 17% pulley, coil pack, wires, plugs, added to my 06 jcw. I ran the car for about 6 weeks with no issues. then, out of the blue, pulling hard in 3rd gear, bam, check engine light comes on and DSC turns off.

So, its the P0108 code. I have done tons of research on this, and there are usually 3 or 4 main "causes" that people think it is, and have tried to fix the car with.

I have tried them ALL (all but one).

• "high" octane fuel (90 octane, no ethanol, octane boost)
• Replaced both MAP sensors
• Replaced both IC boots

the "last" item to check is if my CAT is clogged (somewhat or at all), as this could be causing the "overboost" issue, as seen with some cars that somehow magically produce crazy boost after upgrades. *(i seem to be at least at 17 lbs, that is as high as this gauge goes, and its an OEM gauge!)

So, has anyone else fixed this (code issue), seen this, or know how to check a Cat? I wanted to put headers and a high flow cat on the car anyway... any suggestions for "good" high flow cats?

SES light sucks, its just too bright! otherwise, my main concern is that the DSC turns off, and stays off until next key cycle. this is a potential safety hazard, if I actually NEED the DSC! (like if its raining)...

 

Where do you live and what are the temps like? Mine in cold weather will do this when I run the car hard and get it up near redline. The SES light will go off after a few key cycles. Basically in any temp under about 50 I can trigger this condition at will. I've learned to just take it a bit easier in the colder weather.

 

I live in Florida. It has been cold, and I do understand that the colder air here will be more dense, essentially causing more boost. But, i am seemingly able to get this even when its not cold, as long as I hold enough boost long enough, or basically anytime im WOT for any real amount of time...

 

That sounds different from what I get then. Mine only happens when it's cold outside. In the warmer weather it never happens. Good luck getting it straightened out and keep us posted on what you find.

 

Having this problem myself. For a long time I would only lose DSC if I jumped on it, now it is tossing a code.

Did you ever resolve it?

 

ya, dont floor it :(

no. i have not actually "resolved" this issue. I am planning on doing a Header + high flow cat setup in a last ditch effort to kill that code.

The only other "known" option, is to actually Delete the code from the cars ECU... this will "fix" the problem, but, you are "losing" that code, in case it actually comes up for real...

 

I had this code and issue. At the time i had a catless header and Milltek cat-back...so getting an entirely new exhaust may not resolve the issue either.

My tmap sensor was replaced roughly 25k miles ago.

I get odd stumbling once in a while as well, and then it just picks up and acts normal.

Car is 100% stock other then a 15% pulley at this time, and still have the light.

 

I have had a p0107 and DSC light come on. After clearing code it would come on again in a month or two.Changed map and tmap sensors and put in Detroit tuned bypass valve along with new silicone supercharger boots. Still got P0107. Cleaned air cleaner[foam IGA] and have not had the code yet. About 7 months. Will clean air filter every 8-10 K and hope that the code dosn't come up again

 

I'll probably replace the map sensors and see what happens. It is a cheap enough change.

 

i already tried the sensors bro... id save your money.

i think its strictly an "overboost" issue. the sensors just say "Hey! your above Xpsi!" and the computer says "Oh No!" and gives you the finger.

either the sensor has to be changed, or the signal needs to be modified / stopped from reaching the computer, or the computer needs to be told "hey shutup and take it. now stop giving me the finger!" by removing the code. those are about my thoughts. :(

 

Well, I am tuned for a 17% pulley and had been running it for about 2 years before it started tossing the code so it has to be something else. I'm at 85K and some of those are pretty hard miles (Autobahn) so it could be the sensors. I also need to look for frayed wires to see if maybe something is coming loose. Meh, it isn't hindering the car so it is more of just and annoyance.

I'll figure it out.

 

when you fig it out, PLEASE let us know!!!!

its driving me crazy.

you have a boost gauge? what does your read out at when your WOT?

 

Scanguage reads about 16 psi.

 

hmm. I have the "mini" boost gauge, and my gauge Tachs out when i womp on it... and that gauge tachs out at 17psi! so, its possible im running even More boost than that.

however, I agree, that its strange these codes have just "shown up", because it was some time after doing my upgrades that the code started showing up. I think something "broke" as well, but Mini techs feel otherwise. After hours in the shop, hooked up to a computer, changing sensors, bla bla bla, no resolve yet :(

 

Well, this is an interesting turn of events. I knew it was time to clean out my catch can, and it had been a while so I pulled it to find that it had quite a bit of oil. (had been lazy and not done it in about a year. So I cleaned it out and put it all back together and now I don't get the DSC or code any longer.

Reminder to me... Don't let it go that long again!

 

hmm. interesting... wonder if i took off my oCC if the code would clear? i dont see why that would DO anything... i think i remember getting that code Before my OCC anyway.

ive finally even noticed oil in my OCC. it took a few months i think, first month i saw nothing! now there is some oil in there! gross! i can hardly believe that sh*t used to go back into the engine!

 

I'm not sure what is happening but I am not having the problems that I was having. Could be the weather change as well. Who knows....

 

Well i feel very very foolish for being so stubborn on the situation. Replaced the MAP sensor located on the front of the Intake Manifold...bam, my MINI is back. Code is gone, and DSC can be turned on/off at will now.

The sensor was only 25k miles old, so i am very curious as to why failed prematurely. Excessive blow-by potentially soaking the the sensor in oil ? IDK. (The car doesnt consume any oil to speak of though, so thats an unlikely theory.)

Either way, i am happy to say this is the end of the saga for me, and it was all solved with a OEM $60 sensor.

 

I'm having the same problem, however what is a $60 sensor for you guys is a $130 sensor for me in Canada, $110 if I cheap out and go aftermarket.

 

The dealer replaced both my map sensors, to no avail.

For those who want a "fix", get an Ian culls auto up, and set it to defeat dsc all the time. That has stopped all ecu complaints about too much boost in my car. It's a band aid fix for sure, but I got tired of seeing the car light up like a tree all the time.