Why does my 2000 dodge Ram Pickup odometer show NO BUS then engine stalls but the gauge lights still work?

"NO BUS" on your 2000 Dodge Ram pickup's odometer indicates a communication issue between the instrument cluster and the vehicle's computer network, often referred to as the "bus." This can lead to various problems, including stalling, as the engine control unit (ECU) may not be receiving the necessary information to function properly.

Here's a breakdown of the possible causes and what to do:

Possible Causes:

* Faulty Instrument Cluster: The instrument cluster itself could be malfunctioning, preventing it from communicating with the network.

* Damaged or Corroded Wiring: Wires connecting the instrument cluster to the network may be broken, damaged, or have corrosion, interrupting the signal.

* Faulty Body Control Module (BCM): The BCM handles various functions, including communication between modules. If it malfunctions, it can disrupt the network.

* Faulty Engine Control Module (ECU): The ECU is responsible for engine functions, and if it's not receiving the proper signals from the instrument cluster, it can lead to stalling.

* Fuses or Relays: A blown fuse or faulty relay related to the network could interrupt the signal.

What to Do:

1. Check Fuses and Relays: Start by inspecting the fuses and relays related to the instrument cluster, BCM, and ECU. Refer to your owner's manual or a repair manual for their locations. Replace any blown fuses.

2. Inspect Wiring: Visually inspect the wiring harness connected to the instrument cluster, BCM, and ECU for any visible damage, wear, or corrosion.

3. Diagnostic Scan: Have the vehicle scanned by a mechanic using an OBD-II scanner. This can help identify specific codes related to the "NO BUS" message and other potential problems.

4. Instrument Cluster Replacement: If the wiring is in good condition and the scan reveals a problem with the instrument cluster, it may need to be replaced.

5. Consult a Mechanic: If the problem persists, it's best to seek professional help from a qualified mechanic. They have the tools and expertise to diagnose and repair complex electrical issues.

Important Note:

* Stalling can be dangerous. If your vehicle is stalling while driving, pull over safely to the side of the road and contact a mechanic.

* Never attempt to work on electrical systems if you are not comfortable doing so. Always refer to a professional for complex repairs.

Remember, the information provided here is general guidance. Always consult your owner's manual or a qualified mechanic for specific instructions and advice related to your vehicle.