Lost Communication With Serial Data Gateway Module B

Where it lives

For U0147, the part to look at first is the module named here.

Check these first

• A wiring or connector fault between Serial Data Gateway Module B and other systems
• A failed Serial Data Gateway Module B
• Corrosion or water at the gateway connections
• A gateway or component that was installed wrong
• A software fault that drops the gateway link

What to do next

1. Scan all modules for communication codes
2. Inspect the Serial Data Gateway Module B wiring and connectors
3. Check the gateway power and ground feeds
4. Verify the gateway and other components are installed correctly
5. Replace Serial Data Gateway Module B if the fault returns
6. Clear the code and retest

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