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General Discussion

Port Comm Error

Thread starter Martincfi
Start date Jul 30, 2023

Martincfi

Well-Known Member

Jul 30, 2023

I have a 2018 AR240 and I got a port comm error on the connext screen for the first time yesterday. The tach worked normally when engine is running, but then oscillates from 0-max back n forth when engine is off.
Batteries are both new and fully charged and I don’t see any loose contacts. Any ideas on where to start troubleshooting? . Thanks in advance for your help.

Here’s a picture of the system diagnostic page not sure what HS09 is but that’s the only thing showing an open circuit