Just had the disco scanned and these are the codes:

-P1517
-P0300
-P0305
-P1316

The light was on before I did my plugs and wires last week and I just got the codes read today. They did not reset them since it costs extra [>:]. Any idea what they are?

 

-P1517 (Neutral Drive Cranking Fault)
-P0300 (Misfire on Multiple Cylinder)
-P0305 (Misfire Cylinder 5)
-P1316 (Misfire Excessive Emissions Fault)

 

http://www.obd-codes.com/trouble_codes/landrover/
You will need to get the codes cleared. You said that you replaced the plugs and wires. Get the codes cleared and wait and see if they come back,then go from there.

 

Yeah, I'm gonna buy the scanner tomorrow.