Ok, since replacing just about every sensor under the hood and installing new plug wires, our Disco I has been running great. Last night, the Check Engine light came on and threw the same old 1177 code.

I just looked under the hood and noticed that the cruise control vacuum line had split and come off. So, I trimmed it, put a little lube on it and reinstalled.

Would that vac line make the computer throw a code? It's just too weird.

 

nothing to do with the cc vac. the code is Maximum Negative FMFR Correction Fault, what wires and plugs did you put in? how long ago were they put in?

 

I finally got the Magnecor 8mm wires, and the PO had just installed platinum + plugs, which look fine.