"No BUS" on a Jeep Cherokee's digital odometer indicates a
communication error between the instrument cluster (where the odometer is) and other electronic control modules (ECMs) in the vehicle. The "BUS" refers to the communication network (usually a CAN bus) that allows different parts of the car's computer system to talk to each other. When this communication is interrupted, the odometer and other related displays may show errors like "No BUS," and various other systems might malfunction.
This isn't necessarily a catastrophic failure, but it's a serious warning sign that requires attention. The problem could be a faulty connection, a damaged ECM, a problem with the wiring harness, or even a blown fuse. You'll need to have it diagnosed by a mechanic to pinpoint the exact cause.
