HELP Vehicle network communication ERROR

[Racingredcoyote]

Hello fellow Mustang owners,

Today I decided to change to pp gauge cluster since EURO cars dont have access too…

I needed to hardwire for the gauges, and I used normal electricity wires? Since I thought it would work right. Now everything put together. I have a big problem, first I got the message: “vehicle communication error”. And now I can start the car but everything is Blank my Sync 3 and cluster…

The gauges light up, but dont show any data on it, also not on start…




What did

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[ORRadtech]

Without any knowledge of the process I'd guess that you cut something you shouldn't, tapped into something you shouldn't or grounded something you shouldn't. Or perhaps the guages/wiring you added has changed some value the computer is expecting to see. CAN systems can be picky about what they expect.
I would suggest two options.
Restore it to stock and see if it works.
Or.
Start an intensive search for someone who has done this and start a one-on-one conversation to see if they can help.
An open fourm like this will be hit or miss finding someone with the specific knowledge and experience to help.

 

[Racingredcoyote]

I have now solved it. I will describe it as best as possible: eventually I discovered that my own electronic wire was bridging the wire of the wiring harness and that may have caused a bridging failure. I have now removed the bridge and reconnected it. Now everything works properly - the oil pressure, but I am now going to find out whether this can be switched on via forscan?

 

[Enjoyer of the Stang]

What wire harness did you replace? i have 2019 mustang gt premium. My audio isn't turning on and now I'm getting a vehicle communication error any ideas. If its the wire harness or a software issue

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