I had the SES light on both ways to and from MOTD. The other MINI I Motored with on the way back home also had it. I don't know the reason for theirs, but I know mine was saying system too rich. One of the vendors that pulled the code said its possibly due to getting some gas with too much Ethanol, as was mentioned earlier in this thread. Interestingly, once this light came on, my exhaust became unbearably loud! I could go into a longwinded bunch of speculation, but first, I'd like to just see some opinions on this. I am planning to have my dealer take a look at it since I'm under warranty.

 

I've gotten the "check engine soon"light after installing a Miltec exhaust. I have a 15% pully,Dneso IK22's,and Web CAI and RAF.

 

I need to revive this thread........ I have the exact symptoms as described by Scavenger. Has anyone else experienced this? And if so what did you do to correct the problem?

Thanks in advance!!

 

just bought my car(03 19% pullie ,milteck exaust,alta intake ,big intercooler)and the next day the service soon light came on.I'm new to this so i need help.Thanks in advance

 

I find it that everytime I reach 17 psi or more in my car, the SES light comes on and the DSC light. The SES light will turn off after 3-4 starts of the engine. I guess it is an overboost code that triggers these lights to come on. Hope this helps.

 

I just installed the 15% pulley and OBX headers with the Stock cat and I get the P0171 System too lean... I rechecked the boots but it's still there.. any suggestions???

 

Check your intercooler boots and make sure they are super tight. But if you are running 17% pullies and getting the SES lights you need to change to the Alta Couplers (BOOTS).

I have had the same problem with my 17%v2 Alta Pulley. I replaced the stock IC boots for the Alta IC Boots (Couplers) and no more problems. The stock boots were too soft for my 17% pulley at higher speeds. I was getting the P0108 code all the time after pushing my car hard, and after replacing the intercooler boots for the Alta. My problem is gone. Henry

 

I have had my SES light on from the 1st day after I had the 180 thermo installed.

 

Old thread, I know but I've searched the forum and I'm not seeing a fix.
I've got the same issue... Rev high 4k - 5k and the service Engine Soon Light comes on.


Is it really an IC boot issue?