Also keep in mind...if something is shorting your connectors on your diagnostics port (under the dash), you will also get the NO BUS message. Has happened a couple times to me with dirt etc when im programming, or diagnosis trouble codes my Jeep with my Hypertech power pack.
01 TJ. Dana 30/44 4:88's, 4.0 5 speed, 38.5x15 Boggers on 15x10 Streetlocks, CAI, B&M short throw, Neoprene Covers, 4" RC, 3" BL, too much to list and building. >..<