Cummins ISX 15 2250

[Garfeild]

I have a 2012 386 Peterbilt with an ISX 15 2250. the engine light came on Friday the display showed boost pressure, I hooked it to insite and it is showing an active code of 0123 and an inactive code of 0691. I got it home and it never derated on me I could hear the turbo working but not as loud as usual but my manifold pressure gauge is at 0. Not a mechanic but trying to learn to fix things myself. Not real sure if it would be a sensor problem or if it might be the turbo. Can anyone give me some suggestions on where to start please?

[Waterloo]

Did you run those codes through Cummins Quickserve? Are you registered on Quickserve? If not, go do it, you will need your engine serial number.

[Rawze]

FC 0123 is for the IMAP sensor.
here is some more info on it -> http://rawze.com/forums/showthread.php?t...87#pid1087

FC 691 is for turbo inlet temp sensor. Usually only comes up if the sensor has been unplugged or has a short in it.

Both those sensors will make the turbo act up.

[Garfeild]

Ok thanks I will try that Ihave been on quick serve before.

[Garfeild]

Thanks for the reply, I did unplug that sensor. Do you think taking the IMAP sensor out and cleaning it would help fix the problem or a good place to start?

[Waterloo]

Clean the iMap sensor with a tooth brush, no liquids, and then go get yourself a new one on Monday.