marvinkoehler95

Expedition MOST Bus Fault

I'm writing about a potential issue with my 2019 Ford Expedition with a gasoline engine. It has 116859 kilometers. I'm experiencing a MOST bus fault. Symptoms include no audio output, a non-functional audio system, and a navigation system that isn't working. An error is also stored. Could this be related to the bus system?

The 2019 Ford Expedition experienced a MOST bus fault, leading to a non-functional audio and navigation system. The issue was likely related to a malfunctioning control unit within the MOST bus system. A certified workshop diagnosed and confirmed a defect in one of the control units, which was then repaired, resolving the problem.

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4 comment(s)

A MOST bus fault on a 2019 Expedition, huh? That does sound like it could be a bus system issue. Is it possible that one of the control units connected to the MOST bus is malfunctioning? Have you tried checking any of the connections?

Thanks for your reply. How would I determine if a particular control unit is the source of the fault? Is there a specific diagnostic procedure to identify the defective unit within the MOST bus?

Identifying the exact control unit is tricky without proper diagnostics. If multiple systems are down and you are getting a MOST bus error, the issue is likely internal to a module or the wiring between the modules. Honestly, with those symptoms and potential damage, I'd recommend having a workshop investigate this further.

Thanks for the advice. I took the Expedition to a certified workshop, and they confirmed a defect in one of the control units installed in the MOST bus. The repair cost 1000€. This issue is resolved now.

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FORD

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EXPEDITION